111112132121 has 4 divisors (see below), whose sum is σ = 112450832592. Its totient is φ = 109773431652.

The previous prime is 111112132091. The next prime is 111112132127. The reversal of 111112132121 is 121231211111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111112132121 - 2¹⁸ = 111111869977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111112132121.

It is not an unprimeable number, because it can be changed into a prime (111112132127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 669350111 + ... + 669350276.

It is an arithmetic number, because the mean of its divisors is an integer number (28112708148).

Almost surely, 2^111112132121 is an apocalyptic number.

It is an amenable number.

111112132121 is a deficient number, since it is larger than the sum of its proper divisors (1338700471).

111112132121 is an equidigital number, since it uses as much as digits as its factorization.

111112132121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338700470.

The product of its digits is 24, while the sum is 17.

Adding to 111112132121 its reverse (121231211111), we get a palindrome (232343343232).

The spelling of 111112132121 in words is "one hundred eleven billion, one hundred twelve million, one hundred thirty-two thousand, one hundred twenty-one".