21324331332 has 36 divisors (see below), whose sum is σ = 56740181680. Its totient is φ = 6733999152.

The previous prime is 21324331321. The next prime is 21324331337. The reversal of 21324331332 is 23313342312.

21324331332 is a `hidden beast` number, since 2 + 1 + 324 + 3 + 3 + 1 + 332 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 21324331296 and 21324331305.

It is not an unprimeable number, because it can be changed into a prime (21324331337) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15587278 + ... + 15588645.

Almost surely, 2^21324331332 is an apocalyptic number.

It is an amenable number.

21324331332 is an abundant number, since it is smaller than the sum of its proper divisors (35415850348).

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

21324331332 is a wasteful number, since it uses less digits than its factorization.

21324331332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31175952 (or 31175947 counting only the distinct ones).

The product of its digits is 7776, while the sum is 27.

Adding to 21324331332 its reverse (23313342312), we get a palindrome (44637673644).

The spelling of 21324331332 in words is "twenty-one billion, three hundred twenty-four million, three hundred thirty-one thousand, three hundred thirty-two".