22212220122021 has 32 divisors (see below), whose sum is σ = 30401410406400. Its totient is φ = 14420691331200.

The previous prime is 22212220121989. The next prime is 22212220122041. The reversal of 22212220122021 is 12022102221222.

It is not a de Polignac number, because 22212220122021 - 2⁵ = 22212220121989 is a prime.

It is a super-2 number, since 2×22212220122021² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212220122041) 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, 104347546 + ... + 104560196.

It is an arithmetic number, because the mean of its divisors is an integer number (950044075200).

Almost surely, 2^{22212220122021} is an apocalyptic number.

It is an amenable number.

22212220122021 is a deficient number, since it is larger than the sum of its proper divisors (8189190284379).

22212220122021 is a wasteful number, since it uses less digits than its factorization.

22212220122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218649.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22212220122021 its reverse (12022102221222), we get a palindrome (34234322343243).

The spelling of 22212220122021 in words is "twenty-two trillion, two hundred twelve billion, two hundred twenty million, one hundred twenty-two thousand, twenty-one".