21312133200231 has 8 divisors (see below), whose sum is σ = 28590509978880. Its totient is φ = 14120922610872.

The previous prime is 21312133200229. The next prime is 21312133200257. The reversal of 21312133200231 is 13200233121312.

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

It is not a de Polignac number, because 21312133200231 - 2¹ = 21312133200229 is a prime.

It is a super-2 number, since 2×21312133200231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21312133202231) 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, 21791546751 + ... + 21791547728.

It is an arithmetic number, because the mean of its divisors is an integer number (3573813747360).

Almost surely, 2^{21312133200231} is an apocalyptic number.

21312133200231 is a deficient number, since it is larger than the sum of its proper divisors (7278376778649).

21312133200231 is a wasteful number, since it uses less digits than its factorization.

21312133200231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43583094645.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21312133200231 its reverse (13200233121312), we get a palindrome (34512366321543).

The spelling of 21312133200231 in words is "twenty-one trillion, three hundred twelve billion, one hundred thirty-three million, two hundred thousand, two hundred thirty-one".