123113320111212 has 24 divisors (see below), whose sum is σ = 287637969418800. Its totient is φ = 40984408252416.

The previous prime is 123113320111193. The next prime is 123113320111259. The reversal of 123113320111212 is 212111023311321.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6670630137 + ... + 6670648592.

It is an arithmetic number, because the mean of its divisors is an integer number (11984915392450).

Almost surely, 2^{123113320111212} is an apocalyptic number.

123113320111212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123113320111212 is an abundant number, since it is smaller than the sum of its proper divisors (164524649307588).

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

123113320111212 is a wasteful number, since it uses less digits than its factorization.

123113320111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13341279505 (or 13341279503 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 123113320111212 its reverse (212111023311321), we get a palindrome (335224343422533).

The spelling of 123113320111212 in words is "one hundred twenty-three trillion, one hundred thirteen billion, three hundred twenty million, one hundred eleven thousand, two hundred twelve".