21232322022 has 16 divisors (see below), whose sum is σ = 42467971392. Its totient is φ = 7076886120.

The previous prime is 21232321991. The next prime is 21232322029. The reversal of 21232322022 is 22022323212.

It is a super-2 number, since 2×21232322022² (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 21232322022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232322029) 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, 51468 + ... + 212399.

It is an arithmetic number, because the mean of its divisors is an integer number (2654248212).

Almost surely, 2^21232322022 is an apocalyptic number.

21232322022 is an abundant number, since it is smaller than the sum of its proper divisors (21235649370).

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

21232322022 is a wasteful number, since it uses less digits than its factorization.

21232322022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277283.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 21232322022 its reverse (22022323212), we get a palindrome (43254645234).

The spelling of 21232322022 in words is "twenty-one billion, two hundred thirty-two million, three hundred twenty-two thousand, twenty-two".