255033251221 has 12 divisors (see below), whose sum is σ = 309570088032. Its totient is φ = 209095583928.

The previous prime is 255033251177. The next prime is 255033251339. The reversal of 255033251221 is 122152330552.

255033251221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 255033251221 - 2⁷ = 255033251093 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 (255033251521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113145835 + ... + 113148088.

It is an arithmetic number, because the mean of its divisors is an integer number (25797507336).

Almost surely, 2^255033251221 is an apocalyptic number.

It is an amenable number.

255033251221 is a deficient number, since it is larger than the sum of its proper divisors (54536836811).

255033251221 is a wasteful number, since it uses less digits than its factorization.

255033251221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226293960 (or 226293953 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 255033251221 its reverse (122152330552), we get a palindrome (377185581773).

The spelling of 255033251221 in words is "two hundred fifty-five billion, thirty-three million, two hundred fifty-one thousand, two hundred twenty-one".