21132023302331 has 4 divisors (see below), whose sum is σ = 21134830060200. Its totient is φ = 21129216544464.

The previous prime is 21132023302189. The next prime is 21132023302391. The reversal of 21132023302331 is 13320332023112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21132023302331 - 2¹⁰ = 21132023301307 is a prime.

It is a super-2 number, since 2×21132023302331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21132023302331.

It is not an unprimeable number, because it can be changed into a prime (21132023302391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1403367641 + ... + 1403382698.

It is an arithmetic number, because the mean of its divisors is an integer number (5283707515050).

Almost surely, 2^{21132023302331} is an apocalyptic number.

21132023302331 is a deficient number, since it is larger than the sum of its proper divisors (2806757869).

21132023302331 is an equidigital number, since it uses as much as digits as its factorization.

21132023302331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2806757868.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 21132023302331 its reverse (13320332023112), we get a palindrome (34452355325443).

The spelling of 21132023302331 in words is "twenty-one trillion, one hundred thirty-two billion, twenty-three million, three hundred two thousand, three hundred thirty-one".