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122323012220 = 22531700128181
BaseRepresentation
bin111000111101100000…
…1010000101001111100
3102200201220022212012002
41301323001100221330
54001004142342340
6132105554401432
711560164306533
oct1617301205174
9380656285162
10122323012220
1147971173632
121b859890278
13b6c5558a06
145cc5a8531a
1532addc0715
hex1c7b050a7c

122323012220 has 48 divisors (see below), whose sum is σ = 265212009216. Its totient is φ = 47342400000.

The previous prime is 122323012211. The next prime is 122323012237. The reversal of 122323012220 is 22210323221.

It is a happy number.

It is a super-3 number, since 3×1223230122203 (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 122323012192 and 122323012201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4326530 + ... + 4354710.

It is an arithmetic number, because the mean of its divisors is an integer number (5525250192).

Almost surely, 2122323012220 is an apocalyptic number.

122323012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122323012220 is an abundant number, since it is smaller than the sum of its proper divisors (142888996996).

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

122323012220 is a wasteful number, since it uses less digits than its factorization.

122323012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35222 (or 35220 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 122323012220 its reverse (22210323221), we get a palindrome (144533335441).

The spelling of 122323012220 in words is "one hundred twenty-two billion, three hundred twenty-three million, twelve thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 31 62 124 155 310 620 7001 14002 28004 28181 35005 56362 70010 112724 140020 140905 217031 281810 434062 563620 868124 873611 1085155 1747222 2170310 3494444 4340620 4368055 8736110 17472220 197295181 394590362 789180724 986475905 1972951810 3945903620 6116150611 12232301222 24464602444 30580753055 61161506110 122323012220