21232222021231 has 64 divisors (see below), whose sum is σ = 25159129027200. Its totient is φ = 17729187840000.

The previous prime is 21232222021193. The next prime is 21232222021253. The reversal of 21232222021231 is 13212022223212.

It is not a de Polignac number, because 21232222021231 - 2²⁷ = 21232087803503 is a prime.

It is a super-2 number, since 2×21232222021231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21232222021196 and 21232222021205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232222024231) 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 63 ways as a sum of consecutive naturals, for example, 5020622625 + ... + 5020626853.

It is an arithmetic number, because the mean of its divisors is an integer number (393111391050).

Almost surely, 2^{21232222021231} is an apocalyptic number.

21232222021231 is a deficient number, since it is larger than the sum of its proper divisors (3926907005969).

21232222021231 is a wasteful number, since it uses less digits than its factorization.

21232222021231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7660.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21232222021231 its reverse (13212022223212), we get a palindrome (34444244244443).

The spelling of 21232222021231 in words is "twenty-one trillion, two hundred thirty-two billion, two hundred twenty-two million, twenty-one thousand, two hundred thirty-one".