21131132332 has 24 divisors (see below), whose sum is σ = 38969354592. Its totient is φ = 10006128000.

The previous prime is 21131132287. The next prime is 21131132333. The reversal of 21131132332 is 23323113112.

It is not an unprimeable number, because it can be changed into a prime (21131132333) 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, 1127769 + ... + 1146352.

It is an arithmetic number, because the mean of its divisors is an integer number (1623723108).

Almost surely, 2^21131132332 is an apocalyptic number.

It is an amenable number.

21131132332 is a deficient number, since it is larger than the sum of its proper divisors (17838222260).

21131132332 is a wasteful number, since it uses less digits than its factorization.

21131132332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2274249 (or 2274247 counting only the distinct ones).

The product of its digits is 648, while the sum is 22.

Adding to 21131132332 its reverse (23323113112), we get a palindrome (44454245444).

The spelling of 21131132332 in words is "twenty-one billion, one hundred thirty-one million, one hundred thirty-two thousand, three hundred thirty-two".