902121303217 has 2 divisors, whose sum is σ = 902121303218. Its totient is φ = 902121303216.

The previous prime is 902121303199. The next prime is 902121303241. The reversal of 902121303217 is 712303121209.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 573527523856 + 328593779361 = 757316^2 + 573231^2 .

It is a cyclic number.

It is not a de Polignac number, because 902121303217 - 2²³ = 902112914609 is a prime.

It is not a weakly prime, because it can be changed into another prime (902121303277) 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 as a sum of consecutive naturals, namely, 451060651608 + 451060651609.

It is an arithmetic number, because the mean of its divisors is an integer number (451060651609).

Almost surely, 2^902121303217 is an apocalyptic number.

It is an amenable number.

902121303217 is a deficient number, since it is larger than the sum of its proper divisors (1).

902121303217 is an equidigital number, since it uses as much as digits as its factorization.

902121303217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 31.

The spelling of 902121303217 in words is "nine hundred two billion, one hundred twenty-one million, three hundred three thousand, two hundred seventeen".