221010122200997 has 2 divisors, whose sum is σ = 221010122200998. Its totient is φ = 221010122200996.

The previous prime is 221010122200969. The next prime is 221010122201039. The reversal of 221010122200997 is 799002221010122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198260790021121 + 22749332179876 = 14080511^2 + 4769626^2 .

It is a cyclic number.

It is not a de Polignac number, because 221010122200997 - 2²⁸ = 221009853765541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221010122200997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221010122200937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110505061100498 + 110505061100499.

It is an arithmetic number, because the mean of its divisors is an integer number (110505061100499).

Almost surely, 2^{221010122200997} is an apocalyptic number.

It is an amenable number.

221010122200997 is a deficient number, since it is larger than the sum of its proper divisors (1).

221010122200997 is an equidigital number, since it uses as much as digits as its factorization.

221010122200997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 38.

The spelling of 221010122200997 in words is "two hundred twenty-one trillion, ten billion, one hundred twenty-two million, two hundred thousand, nine hundred ninety-seven".