22000021011221 has 16 divisors (see below), whose sum is σ = 25411937683968. Its totient is φ = 18823437235200.

The previous prime is 22000021011209. The next prime is 22000021011229. The reversal of 22000021011221 is 12211012000022.

It is a cyclic number.

It is not a de Polignac number, because 22000021011221 - 2³⁴ = 21982841142037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22000021011196 and 22000021011205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22000021011229) 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, 58737581 + ... + 59110941.

It is an arithmetic number, because the mean of its divisors is an integer number (1588246105248).

Almost surely, 2^{22000021011221} is an apocalyptic number.

It is an amenable number.

22000021011221 is a deficient number, since it is larger than the sum of its proper divisors (3411916672747).

22000021011221 is a wasteful number, since it uses less digits than its factorization.

22000021011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688492.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22000021011221 its reverse (12211012000022), we get a palindrome (34211033011243).

The spelling of 22000021011221 in words is "twenty-two trillion, twenty-one million, eleven thousand, two hundred twenty-one".