10311221321 has 4 divisors (see below), whose sum is σ = 10853917200. Its totient is φ = 9768525444.

The previous prime is 10311221273. The next prime is 10311221381. The reversal of 10311221321 is 12312211301.

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 10311221321 - 2¹⁸ = 10310959177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10311221321.

It is not an unprimeable number, because it can be changed into a prime (10311221381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271347911 + ... + 271347948.

It is an arithmetic number, because the mean of its divisors is an integer number (2713479300).

Almost surely, 2^10311221321 is an apocalyptic number.

It is an amenable number.

10311221321 is a deficient number, since it is larger than the sum of its proper divisors (542695879).

10311221321 is an equidigital number, since it uses as much as digits as its factorization.

10311221321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542695878.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 10311221321 its reverse (12312211301), we get a palindrome (22623432622).

The spelling of 10311221321 in words is "ten billion, three hundred eleven million, two hundred twenty-one thousand, three hundred twenty-one".