113121112 has 32 divisors (see below), whose sum is σ = 236300400. Its totient is φ = 50408064.

The previous prime is 113121103. The next prime is 113121121. The reversal of 113121112 is 211121311.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (113121103) and next prime (113121121).

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 113121092 and 113121101.

It is a congruent number.

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, 15738 + ... + 21769.

Almost surely, 2^113121112 is an apocalyptic number.

It is an amenable number.

113121112 is an abundant number, since it is smaller than the sum of its proper divisors (123179288).

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

113121112 is a wasteful number, since it uses less digits than its factorization.

113121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37555 (or 37551 counting only the distinct ones).

The product of its digits is 12, while the sum is 13.

The square root of 113121112 is about 10635.8409164485. The cubic root of 113121112 is about 483.6314727628.

Adding to 113121112 its reverse (211121311), we get a palindrome (324242423).

The spelling of 113121112 in words is "one hundred thirteen million, one hundred twenty-one thousand, one hundred twelve".