221000122122313 has 4 divisors (see below), whose sum is σ = 223188242143428. Its totient is φ = 218812002101200.

The previous prime is 221000122122293. The next prime is 221000122122317. The reversal of 221000122122313 is 313221221000122.

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 108516555768384 + 112483566353929 = 10417128^2 + 10605827^2 .

It is a cyclic number.

It is not a de Polignac number, because 221000122122313 - 2⁴¹ = 218801098866761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221000122122317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1094060010406 + ... + 1094060010607.

It is an arithmetic number, because the mean of its divisors is an integer number (55797060535857).

Almost surely, 2^{221000122122313} is an apocalyptic number.

It is an amenable number.

221000122122313 is a deficient number, since it is larger than the sum of its proper divisors (2188120021115).

221000122122313 is a wasteful number, since it uses less digits than its factorization.

221000122122313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188120021114.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 221000122122313 its reverse (313221221000122), we get a palindrome (534221343122435).

The spelling of 221000122122313 in words is "two hundred twenty-one trillion, one hundred twenty-two million, one hundred twenty-two thousand, three hundred thirteen".