21023132022 has 24 divisors (see below), whose sum is σ = 46001114640. Its totient is φ = 6938326800.

The previous prime is 21023131897. The next prime is 21023132029. The reversal of 21023132022 is 22023132012.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21023131986 and 21023132004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21023132029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5780122 + ... + 5783757.

It is an arithmetic number, because the mean of its divisors is an integer number (1916713110).

Almost surely, 2^21023132022 is an apocalyptic number.

21023132022 is an abundant number, since it is smaller than the sum of its proper divisors (24977982618).

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

21023132022 is a wasteful number, since it uses less digits than its factorization.

21023132022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11563988 (or 11563985 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21023132022 its reverse (22023132012), we get a palindrome (43046264034).

The spelling of 21023132022 in words is "twenty-one billion, twenty-three million, one hundred thirty-two thousand, twenty-two".