Search a number
-
+
122020121020220 = 225171971821739639
BaseRepresentation
bin11011101111101000000101…
…111110000000011100111100
3121000001000021000212121200122
4123233220011332000130330
5111443134201440121340
61111303134133114112
734462443230426603
oct3357500576003474
9530030230777618
10122020121020220
1135974496292325
1211828397788938
1353115a945c067
14221bb3bd08a3a
15e19053d06db5
hex6efa05f8073c

122020121020220 has 48 divisors (see below), whose sum is σ = 272692563232320. Its totient is φ = 45703804038144.

The previous prime is 122020121020183. The next prime is 122020121020229. The reversal of 122020121020220 is 22020121020221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122020121020229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 910802840 + ... + 910936799.

It is an arithmetic number, because the mean of its divisors is an integer number (5681095067340).

Almost surely, 2122020121020220 is an apocalyptic number.

122020121020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122020121020220 is an abundant number, since it is smaller than the sum of its proper divisors (150672442212100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122020121020220 is a wasteful number, since it uses less digits than its factorization.

122020121020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1821739862 (or 1821739860 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 122020121020220 its reverse (22020121020221), we get a palindrome (144040242040441).

Subtracting from 122020121020220 its reverse (22020121020221), we obtain a palindrome (99999999999999).

The spelling of 122020121020220 in words is "one hundred twenty-two trillion, twenty billion, one hundred twenty-one million, twenty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 197 340 394 788 985 1970 3349 3940 6698 13396 16745 33490 66980 1821739639 3643479278 7286958556 9108698195 18217396390 30969573863 36434792780 61939147726 123878295452 154847869315 309695738630 358882708883 619391477260 717765417766 1435530835532 1794413544415 3588827088830 6101006051011 7177654177660 12202012102022 24404024204044 30505030255055 61010060510110 122020121020220