113112221012 has 48 divisors (see below), whose sum is σ = 227504414592. Its totient is φ = 48202629120.

The previous prime is 113112221011. The next prime is 113112221021. The reversal of 113112221012 is 210122211311.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113112221011) 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, 16430123 + ... + 16437005.

It is an arithmetic number, because the mean of its divisors is an integer number (4739675304).

Almost surely, 2^113112221012 is an apocalyptic number.

It is an amenable number.

113112221012 is an abundant number, since it is smaller than the sum of its proper divisors (114392193580).

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

113112221012 is a wasteful number, since it uses less digits than its factorization.

113112221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10128 (or 10126 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 113112221012 its reverse (210122211311), we get a palindrome (323234432323).

The spelling of 113112221012 in words is "one hundred thirteen billion, one hundred twelve million, two hundred twenty-one thousand, twelve".