313304100122221 has 4 divisors (see below), whose sum is σ = 337404415516252. Its totient is φ = 289203784728192.

The previous prime is 313304100122207. The next prime is 313304100122227. The reversal of 313304100122221 is 122221001403313.

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 38738736162025 + 274565363960196 = 6224045^2 + 16570014^2 .

It is a cyclic number.

It is not a de Polignac number, because 313304100122221 - 2⁷ = 313304100122093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313304100122227) 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, 12050157696996 + ... + 12050157697021.

It is an arithmetic number, because the mean of its divisors is an integer number (84351103879063).

Almost surely, 2^{313304100122221} is an apocalyptic number.

It is an amenable number.

313304100122221 is a deficient number, since it is larger than the sum of its proper divisors (24100315394031).

313304100122221 is a wasteful number, since it uses less digits than its factorization.

313304100122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24100315394030.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 313304100122221 its reverse (122221001403313), we get a palindrome (435525101525534).

The spelling of 313304100122221 in words is "three hundred thirteen trillion, three hundred four billion, one hundred million, one hundred twenty-two thousand, two hundred twenty-one".