21011233022 has 32 divisors (see below), whose sum is σ = 34187233248. Its totient is φ = 9627371136.

The previous prime is 21011233013. The next prime is 21011233043. The reversal of 21011233022 is 22033211012.

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, 3473933 + ... + 3479975.

It is an arithmetic number, because the mean of its divisors is an integer number (1068351039).

Almost surely, 2^21011233022 is an apocalyptic number.

21011233022 is a deficient number, since it is larger than the sum of its proper divisors (13176000226).

21011233022 is a wasteful number, since it uses less digits than its factorization.

21011233022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7004.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21011233022 its reverse (22033211012), we get a palindrome (43044444034).

The spelling of 21011233022 in words is "twenty-one billion, eleven million, two hundred thirty-three thousand, twenty-two".