221313202312310 has 64 divisors (see below), whose sum is σ = 422139066436800. Its totient is φ = 83250350346240.

The previous prime is 221313202312309. The next prime is 221313202312313. The reversal of 221313202312310 is 13213202313122.

It is a super-2 number, since 2×221313202312310² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221313202312310.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221313202312313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1334600522 + ... + 1334766338.

It is an arithmetic number, because the mean of its divisors is an integer number (6595922913075).

Almost surely, 2^{221313202312310} is an apocalyptic number.

221313202312310 is a deficient number, since it is larger than the sum of its proper divisors (200825864124490).

221313202312310 is a wasteful number, since it uses less digits than its factorization.

221313202312310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172161.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 221313202312310 its reverse (13213202313122), we get a palindrome (234526404625432).

The spelling of 221313202312310 in words is "two hundred twenty-one trillion, three hundred thirteen billion, two hundred two million, three hundred twelve thousand, three hundred ten".