10311121021321 has 4 divisors (see below), whose sum is σ = 10389831868944. Its totient is φ = 10232410173700.

The previous prime is 10311121021259. The next prime is 10311121021391. The reversal of 10311121021321 is 12312012111301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10311121021321 - 2²³ = 10311112632713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10311121021391) 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, 39355423615 + ... + 39355423876.

It is an arithmetic number, because the mean of its divisors is an integer number (2597457967236).

Almost surely, 2^{10311121021321} is an apocalyptic number.

It is an amenable number.

10311121021321 is a deficient number, since it is larger than the sum of its proper divisors (78710847623).

10311121021321 is an equidigital number, since it uses as much as digits as its factorization.

10311121021321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78710847622.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 10311121021321 its reverse (12312012111301), we get a palindrome (22623133132622).

The spelling of 10311121021321 in words is "ten trillion, three hundred eleven billion, one hundred twenty-one million, twenty-one thousand, three hundred twenty-one".