253123221287 has 2 divisors, whose sum is σ = 253123221288. Its totient is φ = 253123221286.

The previous prime is 253123221283. The next prime is 253123221359. The reversal of 253123221287 is 782122321352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 253123221287 - 2² = 253123221283 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 253123221287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253123221283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126561610643 + 126561610644.

It is an arithmetic number, because the mean of its divisors is an integer number (126561610644).

Almost surely, 2^253123221287 is an apocalyptic number.

253123221287 is a deficient number, since it is larger than the sum of its proper divisors (1).

253123221287 is an equidigital number, since it uses as much as digits as its factorization.

253123221287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 38.

The spelling of 253123221287 in words is "two hundred fifty-three billion, one hundred twenty-three million, two hundred twenty-one thousand, two hundred eighty-seven".