22111200220997 has 2 divisors, whose sum is σ = 22111200220998. Its totient is φ = 22111200220996.

The previous prime is 22111200220979. The next prime is 22111200221021. The reversal of 22111200220997 is 79902200211122.

Together with previous prime (22111200220979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17392895089441 + 4718305131556 = 4170479^2 + 2172166^2 .

It is a cyclic number.

It is not a de Polignac number, because 22111200220997 - 2⁶ = 22111200220933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22111200220997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22111200220397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11055600110498 + 11055600110499.

It is an arithmetic number, because the mean of its divisors is an integer number (11055600110499).

Almost surely, 2^{22111200220997} is an apocalyptic number.

It is an amenable number.

22111200220997 is a deficient number, since it is larger than the sum of its proper divisors (1).

22111200220997 is an equidigital number, since it uses as much as digits as its factorization.

22111200220997 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 22111200220997 in words is "twenty-two trillion, one hundred eleven billion, two hundred million, two hundred twenty thousand, nine hundred ninety-seven".