21321231202313 has 8 divisors (see below), whose sum is σ = 24377202949632. Its totient is φ = 18267779848896.

The previous prime is 21321231202303. The next prime is 21321231202321. The reversal of 21321231202313 is 31320213212312.

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

It is a cyclic number.

It is not a de Polignac number, because 21321231202313 - 2⁸ = 21321231202057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21321231202303) 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, 630080345 + ... + 630114182.

It is an arithmetic number, because the mean of its divisors is an integer number (3047150368704).

Almost surely, 2^{21321231202313} is an apocalyptic number.

It is an amenable number.

21321231202313 is a deficient number, since it is larger than the sum of its proper divisors (3055971747319).

21321231202313 is a wasteful number, since it uses less digits than its factorization.

21321231202313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260196951.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 21321231202313 its reverse (31320213212312), we get a palindrome (52641444414625).

The spelling of 21321231202313 in words is "twenty-one trillion, three hundred twenty-one billion, two hundred thirty-one million, two hundred two thousand, three hundred thirteen".