22021121011021 has 32 divisors (see below), whose sum is σ = 25127982996480. Its totient is φ = 19116789350400.

The previous prime is 22021121010979. The next prime is 22021121011033. The reversal of 22021121011021 is 12011012112022.

It is a cyclic number.

It is not a de Polignac number, because 22021121011021 - 2⁷ = 22021121010893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22021121010986 and 22021121011004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021121011081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10159185 + ... + 12134713.

It is an arithmetic number, because the mean of its divisors is an integer number (785249468640).

Almost surely, 2^{22021121011021} is an apocalyptic number.

It is an amenable number.

22021121011021 is a deficient number, since it is larger than the sum of its proper divisors (3106861985459).

22021121011021 is a wasteful number, since it uses less digits than its factorization.

22021121011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1976005.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 22021121011021 its reverse (12011012112022), we get a palindrome (34032133123043).

The spelling of 22021121011021 in words is "twenty-two trillion, twenty-one billion, one hundred twenty-one million, eleven thousand, twenty-one".