245883315221 has 2 divisors, whose sum is σ = 245883315222. Its totient is φ = 245883315220.

The previous prime is 245883315217. The next prime is 245883315239. The reversal of 245883315221 is 122513388542.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 245252752900 + 630562321 = 495230^2 + 25111^2 .

It is a cyclic number.

It is not a de Polignac number, because 245883315221 - 2² = 245883315217 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245883315421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122941657610 + 122941657611.

It is an arithmetic number, because the mean of its divisors is an integer number (122941657611).

Almost surely, 2^245883315221 is an apocalyptic number.

It is an amenable number.

245883315221 is a deficient number, since it is larger than the sum of its proper divisors (1).

245883315221 is an equidigital number, since it uses as much as digits as its factorization.

245883315221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 460800, while the sum is 44.

The spelling of 245883315221 in words is "two hundred forty-five billion, eight hundred eighty-three million, three hundred fifteen thousand, two hundred twenty-one".