221535253773323 has 12 divisors (see below), whose sum is σ = 257749878424392. Its totient is φ = 189853757704800.

The previous prime is 221535253773319. The next prime is 221535253773359. The reversal of 221535253773323 is 323377352535122.

It is not a de Polignac number, because 221535253773323 - 2² = 221535253773319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221535253773523) 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, 399752090 + ... + 400305887.

It is an arithmetic number, because the mean of its divisors is an integer number (21479156535366).

Almost surely, 2^{221535253773323} is an apocalyptic number.

221535253773323 is a deficient number, since it is larger than the sum of its proper divisors (36214624651069).

221535253773323 is an equidigital number, since it uses as much as digits as its factorization.

221535253773323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800063642 (or 800063635 counting only the distinct ones).

The product of its digits is 23814000, while the sum is 53.

The spelling of 221535253773323 in words is "two hundred twenty-one trillion, five hundred thirty-five billion, two hundred fifty-three million, seven hundred seventy-three thousand, three hundred twenty-three".