21000300012331 has 4 divisors (see below), whose sum is σ = 21000345788664. Its totient is φ = 21000254236000.

The previous prime is 21000300012311. The next prime is 21000300012383. The reversal of 21000300012331 is 13321000300012.

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 21000300012331 - 2⁵ = 21000300012299 is a prime.

It is a super-2 number, since 2×21000300012331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21000300012311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22192990 + ... + 23119891.

It is an arithmetic number, because the mean of its divisors is an integer number (5250086447166).

Almost surely, 2^{21000300012331} is an apocalyptic number.

21000300012331 is a deficient number, since it is larger than the sum of its proper divisors (45776333).

21000300012331 is an equidigital number, since it uses as much as digits as its factorization.

21000300012331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45776332.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21000300012331 its reverse (13321000300012), we get a palindrome (34321300312343).

The spelling of 21000300012331 in words is "twenty-one trillion, three hundred million, twelve thousand, three hundred thirty-one".