22122100997 has 2 divisors, whose sum is σ = 22122100998. Its totient is φ = 22122100996.

The previous prime is 22122100981. The next prime is 22122101011. The reversal of 22122100997 is 79900122122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20814121441 + 1307979556 = 144271^2 + 36166^2 .

It is a cyclic number.

It is not a de Polignac number, because 22122100997 - 2⁴ = 22122100981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22122100597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11061050498 + 11061050499.

It is an arithmetic number, because the mean of its divisors is an integer number (11061050499).

Almost surely, 2^22122100997 is an apocalyptic number.

It is an amenable number.

22122100997 is a deficient number, since it is larger than the sum of its proper divisors (1).

22122100997 is an equidigital number, since it uses as much as digits as its factorization.

22122100997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

The spelling of 22122100997 in words is "twenty-two billion, one hundred twenty-two million, one hundred thousand, nine hundred ninety-seven".