112111222021 has 4 divisors (see below), whose sum is σ = 112247445472. Its totient is φ = 111974998572.

The previous prime is 112111221997. The next prime is 112111222049. The reversal of 112111222021 is 120222111211.

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 112111222021 - 2³⁵ = 77751483653 is a prime.

It is a super-2 number, since 2×112111222021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112111221986 and 112111222004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112111822021) 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, 68110491 + ... + 68112136.

It is an arithmetic number, because the mean of its divisors is an integer number (28061861368).

Almost surely, 2^112111222021 is an apocalyptic number.

It is an amenable number.

112111222021 is a deficient number, since it is larger than the sum of its proper divisors (136223451).

112111222021 is an equidigital number, since it uses as much as digits as its factorization.

112111222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136223450.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 112111222021 its reverse (120222111211), we get a palindrome (232333333232).

The spelling of 112111222021 in words is "one hundred twelve billion, one hundred eleven million, two hundred twenty-two thousand, twenty-one".