22021112022121 has 32 divisors (see below), whose sum is σ = 24177675681792. Its totient is φ = 19974003329280.

The previous prime is 22021112022103. The next prime is 22021112022167. The reversal of 22021112022121 is 12122021112022.

It is not a de Polignac number, because 22021112022121 - 2¹⁷ = 22021111891049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22021112022521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135410760 + ... + 135573286.

It is an arithmetic number, because the mean of its divisors is an integer number (755552365056).

Almost surely, 2^{22021112022121} is an apocalyptic number.

It is an amenable number.

22021112022121 is a deficient number, since it is larger than the sum of its proper divisors (2156563659671).

22021112022121 is a wasteful number, since it uses less digits than its factorization.

22021112022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165189.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22021112022121 its reverse (12122021112022), we get a palindrome (34143133134143).

It can be divided in two parts, 22021112022 and 121, that multiplied together give a palindrome (2664554554662).

The spelling of 22021112022121 in words is "twenty-two trillion, twenty-one billion, one hundred twelve million, twenty-two thousand, one hundred twenty-one".