22112132021 has 4 divisors (see below), whose sum is σ = 25271008032. Its totient is φ = 18953256012.

The previous prime is 22112132017. The next prime is 22112132051. The reversal of 22112132021 is 12023121122.

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 22112132021 - 2² = 22112132017 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 (22112132051) 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, 1579437995 + ... + 1579438008.

It is an arithmetic number, because the mean of its divisors is an integer number (6317752008).

Almost surely, 2^22112132021 is an apocalyptic number.

It is an amenable number.

22112132021 is a deficient number, since it is larger than the sum of its proper divisors (3158876011).

22112132021 is an equidigital number, since it uses as much as digits as its factorization.

22112132021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3158876010.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 22112132021 its reverse (12023121122), we get a palindrome (34135253143).

The spelling of 22112132021 in words is "twenty-two billion, one hundred twelve million, one hundred thirty-two thousand, twenty-one".