20100002199997 has 2 divisors, whose sum is σ = 20100002199998. Its totient is φ = 20100002199996.

The previous prime is 20100002199947. The next prime is 20100002200021. The reversal of 20100002199997 is 79999120000102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18686694941721 + 1413307258276 = 4322811^2 + 1188826^2 .

It is a cyclic number.

It is not a de Polignac number, because 20100002199997 - 2²³ = 20099993811389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20100002199997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20100002199947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050001099998 + 10050001099999.

It is an arithmetic number, because the mean of its divisors is an integer number (10050001099999).

Almost surely, 2^{20100002199997} is an apocalyptic number.

It is an amenable number.

20100002199997 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100002199997 is an equidigital number, since it uses as much as digits as its factorization.

20100002199997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 183708, while the sum is 49.

The spelling of 20100002199997 in words is "twenty trillion, one hundred billion, two million, one hundred ninety-nine thousand, nine hundred ninety-seven".