313110202212121 has 4 divisors (see below), whose sum is σ = 313110503910244. Its totient is φ = 313109900514000.

The previous prime is 313110202212053. The next prime is 313110202212139. The reversal of 313110202212121 is 121212202011313.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 195280501518400 + 117829700693721 = 13974280^2 + 10854939^2 .

It is a cyclic number.

It is not a de Polignac number, because 313110202212121 - 2²³ = 313110193823513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313110202212092 and 313110202212101.

It is not an unprimeable number, because it can be changed into a prime (313110202212151) 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, 149286930 + ... + 151369771.

It is an arithmetic number, because the mean of its divisors is an integer number (78277625977561).

Almost surely, 2^{313110202212121} is an apocalyptic number.

It is an amenable number.

313110202212121 is a deficient number, since it is larger than the sum of its proper divisors (301698123).

313110202212121 is a wasteful number, since it uses less digits than its factorization.

313110202212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301698122.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 313110202212121 its reverse (121212202011313), we get a palindrome (434322404223434).

The spelling of 313110202212121 in words is "three hundred thirteen trillion, one hundred ten billion, two hundred two million, two hundred twelve thousand, one hundred twenty-one".