253000221231 has 4 divisors (see below), whose sum is σ = 337333628312. Its totient is φ = 168666814152.

The previous prime is 253000221217. The next prime is 253000221233. The reversal of 253000221231 is 132122000352.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 253000221231 - 2⁹ = 253000220719 is a prime.

It is a super-2 number, since 2×253000221231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253000221198 and 253000221207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253000221233) 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 3 ways as a sum of consecutive naturals, for example, 42166703536 + ... + 42166703541.

It is an arithmetic number, because the mean of its divisors is an integer number (84333407078).

Almost surely, 2^253000221231 is an apocalyptic number.

253000221231 is a deficient number, since it is larger than the sum of its proper divisors (84333407081).

253000221231 is an equidigital number, since it uses as much as digits as its factorization.

253000221231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84333407080.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 253000221231 its reverse (132122000352), we get a palindrome (385122221583).

The spelling of 253000221231 in words is "two hundred fifty-three billion, two hundred twenty-one thousand, two hundred thirty-one".