21333220132 has 24 divisors (see below), whose sum is σ = 42889835520. Its totient is φ = 9094938240.

The previous prime is 21333220127. The next prime is 21333220141. The reversal of 21333220132 is 23102233312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1989157 + ... + 1999852.

It is an arithmetic number, because the mean of its divisors is an integer number (1787076480).

Almost surely, 2^21333220132 is an apocalyptic number.

It is an amenable number.

21333220132 is an abundant number, since it is smaller than the sum of its proper divisors (21556615388).

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

21333220132 is a wasteful number, since it uses less digits than its factorization.

21333220132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3989211 (or 3989209 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21333220132 its reverse (23102233312), we get a palindrome (44435453444).

The spelling of 21333220132 in words is "twenty-one billion, three hundred thirty-three million, two hundred twenty thousand, one hundred thirty-two".