253430264221 has 4 divisors (see below), whose sum is σ = 266768699200. Its totient is φ = 240091829244.

The previous prime is 253430264189. The next prime is 253430264239. The reversal of 253430264221 is 122462034352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 253430264221 - 2⁵ = 253430264189 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 (253430262221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6669217461 + ... + 6669217498.

It is an arithmetic number, because the mean of its divisors is an integer number (66692174800).

Almost surely, 2^253430264221 is an apocalyptic number.

It is an amenable number.

253430264221 is a deficient number, since it is larger than the sum of its proper divisors (13338434979).

253430264221 is a wasteful number, since it uses less digits than its factorization.

253430264221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13338434978.

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 253430264221 its reverse (122462034352), we get a palindrome (375892298573).

The spelling of 253430264221 in words is "two hundred fifty-three billion, four hundred thirty million, two hundred sixty-four thousand, two hundred twenty-one".