22021135154597 has 2 divisors, whose sum is σ = 22021135154598. Its totient is φ = 22021135154596.

The previous prime is 22021135154521. The next prime is 22021135154609. The reversal of 22021135154597 is 79545153112022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15366133441156 + 6655001713441 = 3919966^2 + 2579729^2 .

It is a cyclic number.

It is not a de Polignac number, because 22021135154597 - 2⁸ = 22021135154341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22021135151597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010567577298 + 11010567577299.

It is an arithmetic number, because the mean of its divisors is an integer number (11010567577299).

Almost surely, 2^{22021135154597} is an apocalyptic number.

It is an amenable number.

22021135154597 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021135154597 is an equidigital number, since it uses as much as digits as its factorization.

22021135154597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756000, while the sum is 47.

The spelling of 22021135154597 in words is "twenty-two trillion, twenty-one billion, one hundred thirty-five million, one hundred fifty-four thousand, five hundred ninety-seven".