21333311022 has 16 divisors (see below), whose sum is σ = 42741614160. Its totient is φ = 7098604992.

The previous prime is 21333311011. The next prime is 21333311039. The reversal of 21333311022 is 22011333312.

It is a super-2 number, since 2×21333311022² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21333311022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3120973 + ... + 3127800.

It is an arithmetic number, because the mean of its divisors is an integer number (2671350885).

Almost surely, 2^21333311022 is an apocalyptic number.

21333311022 is an abundant number, since it is smaller than the sum of its proper divisors (21408303138).

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

21333311022 is a wasteful number, since it uses less digits than its factorization.

21333311022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6249347.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21333311022 its reverse (22011333312), we get a palindrome (43344644334).

The spelling of 21333311022 in words is "twenty-one billion, three hundred thirty-three million, three hundred eleven thousand, twenty-two".