313320021121 has 4 divisors (see below), whose sum is σ = 314192779200. Its totient is φ = 312447263044.

The previous prime is 313320021101. The next prime is 313320021199. The reversal of 313320021121 is 121120023313.

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, and also an emirpimes, since its reverse is a distinct semiprime: 121120023313 = 67453 ⋅1795621.

It is a cyclic number.

It is not a de Polignac number, because 313320021121 - 2⁵ = 313320021089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (313320021101) 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, 436378501 + ... + 436379218.

It is an arithmetic number, because the mean of its divisors is an integer number (78548194800).

Almost surely, 2^313320021121 is an apocalyptic number.

It is an amenable number.

313320021121 is a deficient number, since it is larger than the sum of its proper divisors (872758079).

313320021121 is an equidigital number, since it uses as much as digits as its factorization.

313320021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872758078.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 313320021121 its reverse (121120023313), we get a palindrome (434440044434).

The spelling of 313320021121 in words is "three hundred thirteen billion, three hundred twenty million, twenty-one thousand, one hundred twenty-one".