113121000012 has 24 divisors (see below), whose sum is σ = 263961751536. Its totient is φ = 37705178368.

The previous prime is 113121000011. The next prime is 113121000043. The reversal of 113121000012 is 210000121311.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (113121000011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44008 + ... + 477680.

It is an arithmetic number, because the mean of its divisors is an integer number (10998406314).

Almost surely, 2^113121000012 is an apocalyptic number.

113121000012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

113121000012 is an abundant number, since it is smaller than the sum of its proper divisors (150840751524).

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

113121000012 is a wasteful number, since it uses less digits than its factorization.

113121000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455417 (or 455415 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 113121000012 its reverse (210000121311), we get a palindrome (323121121323).

The spelling of 113121000012 in words is "one hundred thirteen billion, one hundred twenty-one million, twelve", and thus it is an aban number.