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120020212220 = 225149121333203
BaseRepresentation
bin110111111000111000…
…0110001100111111100
3102110210102012111110012
41233301300301213330
53431300133242340
6131045253402352
711446132654106
oct1576160614774
9373712174405
10120020212220
114699a30a937
121b3166393b8
13b41944326c
145b47cc8576
1531c6b49565
hex1bf1c319fc

120020212220 has 48 divisors (see below), whose sum is σ = 253950832800. Its totient is φ = 47645135616.

The previous prime is 120020212171. The next prime is 120020212223. The reversal of 120020212220 is 22212020021.

It is a junction number, because it is equal to n+sod(n) for n = 120020212195 and 120020212204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120020212223) 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, 3598139 + ... + 3631341.

It is an arithmetic number, because the mean of its divisors is an integer number (5290642350).

Almost surely, 2120020212220 is an apocalyptic number.

120020212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120020212220 is an abundant number, since it is smaller than the sum of its proper divisors (133930620580).

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

120020212220 is a wasteful number, since it uses less digits than its factorization.

120020212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34574 (or 34572 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 120020212220 its reverse (22212020021), we get a palindrome (142232232241).

The spelling of 120020212220 in words is "one hundred twenty billion, twenty million, two hundred twelve thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 149 298 596 745 1213 1490 2426 2980 4852 6065 12130 24260 33203 66406 132812 166015 180737 332030 361474 664060 722948 903685 1807370 3614740 4947247 9894494 19788988 24736235 40275239 49472470 80550478 98944940 161100956 201376195 402752390 805504780 6001010611 12002021222 24004042444 30005053055 60010106110 120020212220