22001562101797 has 2 divisors, whose sum is σ = 22001562101798. Its totient is φ = 22001562101796.

The previous prime is 22001562101707. The next prime is 22001562101839. The reversal of 22001562101797 is 79710126510022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20970116710596 + 1031445391201 = 4579314^2 + 1015601^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22001562101797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22001562101707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11000781050898 + 11000781050899.

It is an arithmetic number, because the mean of its divisors is an integer number (11000781050899).

Almost surely, 2^{22001562101797} is an apocalyptic number.

It is an amenable number.

22001562101797 is a deficient number, since it is larger than the sum of its proper divisors (1).

22001562101797 is an equidigital number, since it uses as much as digits as its factorization.

22001562101797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 43.

The spelling of 22001562101797 in words is "twenty-two trillion, one billion, five hundred sixty-two million, one hundred one thousand, seven hundred ninety-seven".