22308817997 has 2 divisors, whose sum is σ = 22308817998. Its totient is φ = 22308817996.

The previous prime is 22308817931. The next prime is 22308818017. The reversal of 22308817997 is 79971880322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21959090596 + 349727401 = 148186^2 + 18701^2 .

It is a cyclic number.

It is not a de Polignac number, because 22308817997 - 2¹⁰ = 22308816973 is a prime.

It is a super-3 number, since 3×22308817997³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22308837997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11154408998 + 11154408999.

It is an arithmetic number, because the mean of its divisors is an integer number (11154408999).

Almost surely, 2^22308817997 is an apocalyptic number.

It is an amenable number.

22308817997 is a deficient number, since it is larger than the sum of its proper divisors (1).

22308817997 is an equidigital number, since it uses as much as digits as its factorization.

22308817997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3048192, while the sum is 56.

The spelling of 22308817997 in words is "twenty-two billion, three hundred eight million, eight hundred seventeen thousand, nine hundred ninety-seven".