21332231022 has 16 divisors (see below), whose sum is σ = 42852413952. Its totient is φ = 7079418360.

The previous prime is 21332230993. The next prime is 21332231027. The reversal of 21332231022 is 22013223312.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21332231022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21332231027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7829854 + ... + 7832577.

It is an arithmetic number, because the mean of its divisors is an integer number (2678275872).

Almost surely, 2^21332231022 is an apocalyptic number.

21332231022 is an abundant number, since it is smaller than the sum of its proper divisors (21520182930).

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

21332231022 is a wasteful number, since it uses less digits than its factorization.

21332231022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15662663.

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

Adding to 21332231022 its reverse (22013223312), we get a palindrome (43345454334).

The spelling of 21332231022 in words is "twenty-one billion, three hundred thirty-two million, two hundred thirty-one thousand, twenty-two".