21021333123222 has 48 divisors (see below), whose sum is σ = 45628337664000. Its totient is φ = 6994478950272.

The previous prime is 21021333123187. The next prime is 21021333123227. The reversal of 21021333123222 is 22232133312012.

21021333123222 is a `hidden beast` number, since 2 + 1 + 0 + 2 + 1 + 3 + 331 + 2 + 322 + 2 = 666.

It is a super-2 number, since 2×21021333123222² (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 (21021333123227) 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 23 ways as a sum of consecutive naturals, for example, 367034404 + ... + 367091672.

It is an arithmetic number, because the mean of its divisors is an integer number (950590368000).

Almost surely, 2^{21021333123222} is an apocalyptic number.

21021333123222 is an abundant number, since it is smaller than the sum of its proper divisors (24607004540778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21021333123222 is a wasteful number, since it uses less digits than its factorization.

21021333123222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93685 (or 93682 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 21021333123222 its reverse (22232133312012), we get a palindrome (43253466435234).

The spelling of 21021333123222 in words is "twenty-one trillion, twenty-one billion, three hundred thirty-three million, one hundred twenty-three thousand, two hundred twenty-two".