21132001331 has 8 divisors (see below), whose sum is σ = 24189137664. Its totient is φ = 18084434760.

The previous prime is 21132001321. The next prime is 21132001357. The reversal of 21132001331 is 13310023112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21132001331 - 2²² = 21127807027 is a prime.

It is a super-2 number, since 2×21132001331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21132001301) 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, 2387705 + ... + 2396538.

It is an arithmetic number, because the mean of its divisors is an integer number (3023642208).

Almost surely, 2^21132001331 is an apocalyptic number.

21132001331 is a deficient number, since it is larger than the sum of its proper divisors (3057136333).

21132001331 is an equidigital number, since it uses as much as digits as its factorization.

21132001331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4784881.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21132001331 its reverse (13310023112), we get a palindrome (34442024443).

The spelling of 21132001331 in words is "twenty-one billion, one hundred thirty-two million, one thousand, three hundred thirty-one".