21321222201022 has 32 divisors (see below), whose sum is σ = 33561845710848. Its totient is φ = 10139361282336.

The previous prime is 21321222200989. The next prime is 21321222201101. The reversal of 21321222201022 is 22010222212312.

It is a happy number.

It is a super-2 number, since 2×21321222201022² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21321222200984 and 21321222201002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4185283 + ... + 7756225.

It is an arithmetic number, because the mean of its divisors is an integer number (1048807678464).

Almost surely, 2^{21321222201022} is an apocalyptic number.

21321222201022 is a deficient number, since it is larger than the sum of its proper divisors (12240623509826).

21321222201022 is a wasteful number, since it uses less digits than its factorization.

21321222201022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3571704.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21321222201022 its reverse (22010222212312), we get a palindrome (43331444413334).

The spelling of 21321222201022 in words is "twenty-one trillion, three hundred twenty-one billion, two hundred twenty-two million, two hundred one thousand, twenty-two".