221313320131023 has 12 divisors (see below), whose sum is σ = 320206700570848. Its totient is φ = 147296718885600.

The previous prime is 221313320130941. The next prime is 221313320131061. The reversal of 221313320131023 is 320131023313122.

221313320131023 is a `hidden beast` number, since 2 + 2 + 1 + 3 + 1 + 3 + 320 + 1 + 310 + 23 = 666.

It is not a de Polignac number, because 221313320131023 - 2²⁰ = 221313319082447 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 (221313320131063) 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 11 ways as a sum of consecutive naturals, for example, 20457872215 + ... + 20457883032.

Almost surely, 2^{221313320131023} is an apocalyptic number.

221313320131023 is a deficient number, since it is larger than the sum of its proper divisors (98893380439825).

221313320131023 is a wasteful number, since it uses less digits than its factorization.

221313320131023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40915755854 (or 40915755851 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 221313320131023 its reverse (320131023313122), we get a palindrome (541444343444145).

The spelling of 221313320131023 in words is "two hundred twenty-one trillion, three hundred thirteen billion, three hundred twenty million, one hundred thirty-one thousand, twenty-three".