21232112322 has 32 divisors (see below), whose sum is σ = 43545858048. Its totient is φ = 6897811536.

The previous prime is 21232112309. The next prime is 21232112323. The reversal of 21232112322 is 22321123212.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (21232112323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30583 + ... + 208325.

It is an arithmetic number, because the mean of its divisors is an integer number (1360808064).

Almost surely, 2^21232112322 is an apocalyptic number.

21232112322 is an abundant number, since it is smaller than the sum of its proper divisors (22313745726).

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

21232112322 is a wasteful number, since it uses less digits than its factorization.

21232112322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178254.

The product of its digits is 576, while the sum is 21.

Adding to 21232112322 its reverse (22321123212), we get a palindrome (43553235534).

The spelling of 21232112322 in words is "twenty-one billion, two hundred thirty-two million, one hundred twelve thousand, three hundred twenty-two".