113212121103 has 6 divisors (see below), whose sum is σ = 163528619384. Its totient is φ = 75474747396.

The previous prime is 113212121083. The next prime is 113212121111. The reversal of 113212121103 is 301121212311.

It is not a de Polignac number, because 113212121103 - 2²⁵ = 113178566671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113212121153) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6289562275 + ... + 6289562292.

Almost surely, 2^113212121103 is an apocalyptic number.

113212121103 is a deficient number, since it is larger than the sum of its proper divisors (50316498281).

113212121103 is a wasteful number, since it uses less digits than its factorization.

113212121103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12579124573 (or 12579124570 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 113212121103 its reverse (301121212311), we get a palindrome (414333333414).

The spelling of 113212121103 in words is "one hundred thirteen billion, two hundred twelve million, one hundred twenty-one thousand, one hundred three".