21232313022 has 32 divisors (see below), whose sum is σ = 42565824000. Its totient is φ = 7060593728.

The previous prime is 21232312993. The next prime is 21232313023. The reversal of 21232313022 is 22031323212.

It is a happy number.

It is a super-2 number, since 2×21232313022² (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 21232313022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232313023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6154354 + ... + 6157802.

It is an arithmetic number, because the mean of its divisors is an integer number (1330182000).

Almost surely, 2^21232313022 is an apocalyptic number.

21232313022 is an abundant number, since it is smaller than the sum of its proper divisors (21333510978).

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

21232313022 is a wasteful number, since it uses less digits than its factorization.

21232313022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5600.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21232313022 its reverse (22031323212), we get a palindrome (43263636234).

The spelling of 21232313022 in words is "twenty-one billion, two hundred thirty-two million, three hundred thirteen thousand, twenty-two".