21132021112331 has 8 divisors (see below), whose sum is σ = 21218280593184. Its totient is φ = 21045792901120.

The previous prime is 21132021112303. The next prime is 21132021112337. The reversal of 21132021112331 is 13321112023112.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21132021112331 is a prime.

It is a super-2 number, since 2×21132021112331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21132021112297 and 21132021112306.

It is not an unprimeable number, because it can be changed into a prime (21132021112337) 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, 6462575 + ... + 9166728.

It is an arithmetic number, because the mean of its divisors is an integer number (2652285074148).

Almost surely, 2^{21132021112331} is an apocalyptic number.

21132021112331 is a deficient number, since it is larger than the sum of its proper divisors (86259480853).

21132021112331 is a wasteful number, since it uses less digits than its factorization.

21132021112331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15634821.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 21132021112331 its reverse (13321112023112), we get a palindrome (34453133135443).

The spelling of 21132021112331 in words is "twenty-one trillion, one hundred thirty-two billion, twenty-one million, one hundred twelve thousand, three hundred thirty-one".