85302221297 has 2 divisors, whose sum is σ = 85302221298. Its totient is φ = 85302221296.

The previous prime is 85302221239. The next prime is 85302221341. The reversal of 85302221297 is 79212220358.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79989414976 + 5312806321 = 282824^2 + 72889^2 .

It is a cyclic number.

It is not a de Polignac number, because 85302221297 - 2²² = 85298026993 is a prime.

It is not a weakly prime, because it can be changed into another prime (85302221197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42651110648 + 42651110649.

It is an arithmetic number, because the mean of its divisors is an integer number (42651110649).

Almost surely, 2^85302221297 is an apocalyptic number.

It is an amenable number.

85302221297 is a deficient number, since it is larger than the sum of its proper divisors (1).

85302221297 is an equidigital number, since it uses as much as digits as its factorization.

85302221297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 85302221297 in words is "eighty-five billion, three hundred two million, two hundred twenty-one thousand, two hundred ninety-seven".