255002116221 has 32 divisors (see below), whose sum is σ = 384861895040. Its totient is φ = 166827859200.

The previous prime is 255002116183. The next prime is 255002116249. The reversal of 255002116221 is 122611200552.

255002116221 is a `hidden beast` number, since 25 + 5 + 0 + 0 + 2 + 11 + 622 + 1 = 666.

It is not a de Polignac number, because 255002116221 - 2³⁰ = 253928374397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255002116921) 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 31 ways as a sum of consecutive naturals, for example, 534366 + ... + 891936.

It is an arithmetic number, because the mean of its divisors is an integer number (12026934220).

Almost surely, 2^255002116221 is an apocalyptic number.

It is an amenable number.

255002116221 is a deficient number, since it is larger than the sum of its proper divisors (129859778819).

255002116221 is a wasteful number, since it uses less digits than its factorization.

255002116221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358074 (or 358068 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 255002116221 its reverse (122611200552), we get a palindrome (377613316773).

The spelling of 255002116221 in words is "two hundred fifty-five billion, two million, one hundred sixteen thousand, two hundred twenty-one".