22720435033997 has 2 divisors, whose sum is σ = 22720435033998. Its totient is φ = 22720435033996.

The previous prime is 22720435033943. The next prime is 22720435034021. The reversal of 22720435033997 is 79933053402722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18417710395396 + 4302724638601 = 4291586^2 + 2074301^2 .

It is a cyclic number.

It is not a de Polignac number, because 22720435033997 - 2³⁸ = 22445557127053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22720435033937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11360217516998 + 11360217516999.

It is an arithmetic number, because the mean of its divisors is an integer number (11360217516999).

Almost surely, 2^{22720435033997} is an apocalyptic number.

It is an amenable number.

22720435033997 is a deficient number, since it is larger than the sum of its proper divisors (1).

22720435033997 is an equidigital number, since it uses as much as digits as its factorization.

22720435033997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17146080, while the sum is 56.

The spelling of 22720435033997 in words is "twenty-two trillion, seven hundred twenty billion, four hundred thirty-five million, thirty-three thousand, nine hundred ninety-seven".