9021010997 has 2 divisors, whose sum is σ = 9021010998. Its totient is φ = 9021010996.

The previous prime is 9021010991. The next prime is 9021011017. The reversal of 9021010997 is 7990101209.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8864410801 + 156600196 = 94151^2 + 12514^2 .

It is a cyclic number.

It is not a de Polignac number, because 9021010997 - 2¹⁸ = 9020748853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9021010997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9021010991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4510505498 + 4510505499.

It is an arithmetic number, because the mean of its divisors is an integer number (4510505499).

Almost surely, 2^9021010997 is an apocalyptic number.

It is an amenable number.

9021010997 is a deficient number, since it is larger than the sum of its proper divisors (1).

9021010997 is an equidigital number, since it uses as much as digits as its factorization.

9021010997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 38.

The square root of 9021010997 is about 94979.0029269628. The cubic root of 9021010997 is about 2081.7012552265.

The spelling of 9021010997 in words is "nine billion, twenty-one million, ten thousand, nine hundred ninety-seven".