22122110222021 has 16 divisors (see below), whose sum is σ = 22199373630720. Its totient is φ = 22045007749440.

The previous prime is 22122110221997. The next prime is 22122110222053. The reversal of 22122110222021 is 12022201122122.

It is a cyclic number.

It is not a de Polignac number, because 22122110222021 - 2¹⁸ = 22122109959877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22122110221984 and 22122110222002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122110222921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1122427115 + ... + 1122446823.

It is an arithmetic number, because the mean of its divisors is an integer number (1387460851920).

Almost surely, 2^{22122110222021} is an apocalyptic number.

It is an amenable number.

22122110222021 is a deficient number, since it is larger than the sum of its proper divisors (77263408699).

22122110222021 is a wasteful number, since it uses less digits than its factorization.

22122110222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23596.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22122110222021 its reverse (12022201122122), we get a palindrome (34144311344143).

The spelling of 22122110222021 in words is "twenty-two trillion, one hundred twenty-two billion, one hundred ten million, two hundred twenty-two thousand, twenty-one".