313221110121 has 12 divisors (see below), whose sum is σ = 453611778048. Its totient is φ = 208268864664.

The previous prime is 313221110021. The next prime is 313221110123. The reversal of 313221110121 is 121011122313.

313221110121 is a `hidden beast` number, since 313 + 221 + 1 + 10 + 121 = 666.

It is not a de Polignac number, because 313221110121 - 2⁹ = 313221109609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 313221110094 and 313221110103.

It is not an unprimeable number, because it can be changed into a prime (313221110123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45430425 + ... + 45437318.

It is an arithmetic number, because the mean of its divisors is an integer number (37800981504).

Almost surely, 2^313221110121 is an apocalyptic number.

It is an amenable number.

313221110121 is a deficient number, since it is larger than the sum of its proper divisors (140390667927).

313221110121 is a wasteful number, since it uses less digits than its factorization.

313221110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90868132 (or 90868129 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 313221110121 its reverse (121011122313), we get a palindrome (434232232434).

The spelling of 313221110121 in words is "three hundred thirteen billion, two hundred twenty-one million, one hundred ten thousand, one hundred twenty-one".