221312330010313 has 4 divisors (see below), whose sum is σ = 222591592033668. Its totient is φ = 220033067986960.

The previous prime is 221312330010307. The next prime is 221312330010353. The reversal of 221312330010313 is 313010033213122.

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 210156282445824 + 11156047564489 = 14496768^2 + 3340067^2 .

It is a cyclic number.

It is not a de Polignac number, because 221312330010313 - 2⁵ = 221312330010281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221312330010353) 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, 639631011418 + ... + 639631011763.

It is an arithmetic number, because the mean of its divisors is an integer number (55647898008417).

Almost surely, 2^{221312330010313} is an apocalyptic number.

It is an amenable number.

221312330010313 is a deficient number, since it is larger than the sum of its proper divisors (1279262023355).

221312330010313 is a wasteful number, since it uses less digits than its factorization.

221312330010313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279262023354.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 221312330010313 its reverse (313010033213122), we get a palindrome (534322363223435).

The spelling of 221312330010313 in words is "two hundred twenty-one trillion, three hundred twelve billion, three hundred thirty million, ten thousand, three hundred thirteen".