22122222022021 has 32 divisors (see below), whose sum is σ = 24852647828736. Its totient is φ = 19517137920000.

The previous prime is 22122222021959. The next prime is 22122222022051. The reversal of 22122222022021 is 12022022222122.

It is a cyclic number.

It is not a de Polignac number, because 22122222022021 - 2³⁹ = 21572466208133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22122222021983 and 22122222022001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122222022051) 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, 65642296 + ... + 65978446.

It is an arithmetic number, because the mean of its divisors is an integer number (776645244648).

Almost surely, 2^{22122222022021} is an apocalyptic number.

It is an amenable number.

22122222022021 is a deficient number, since it is larger than the sum of its proper divisors (2730425806715).

22122222022021 is a wasteful number, since it uses less digits than its factorization.

22122222022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336973.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 22122222022021 its reverse (12022022222122), we get a palindrome (34144244244143).

The spelling of 22122222022021 in words is "twenty-two trillion, one hundred twenty-two billion, two hundred twenty-two million, twenty-two thousand, twenty-one".