21322312332 has 24 divisors (see below), whose sum is σ = 49761289536. Its totient is φ = 7106119248.

The previous prime is 21322312331. The next prime is 21322312351. The reversal of 21322312332 is 23321322312.

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 (21322312331) 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, 96238 + ... + 227829.

It is an arithmetic number, because the mean of its divisors is an integer number (2073387064).

Almost surely, 2^21322312332 is an apocalyptic number.

It is an amenable number.

21322312332 is an abundant number, since it is smaller than the sum of its proper divisors (28438977204).

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

21322312332 is a wasteful number, since it uses less digits than its factorization.

21322312332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329557 (or 329555 counting only the distinct ones).

The product of its digits is 2592, while the sum is 24.

Adding to 21322312332 its reverse (23321322312), we get a palindrome (44643634644).

The spelling of 21322312332 in words is "twenty-one billion, three hundred twenty-two million, three hundred twelve thousand, three hundred thirty-two".