22102100987489 has 2 divisors, whose sum is σ = 22102100987490. Its totient is φ = 22102100987488.

The previous prime is 22102100987443. The next prime is 22102100987539. The reversal of 22102100987489 is 98478900120122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15422114410000 + 6679986577489 = 3927100^2 + 2584567^2 .

It is a cyclic number.

It is not a de Polignac number, because 22102100987489 - 2⁸ = 22102100987233 is a prime.

It is a super-2 number, since 2×22102100987489² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22102100987489.

It is not a weakly prime, because it can be changed into another prime (22102100987419) 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, 11051050493744 + 11051050493745.

It is an arithmetic number, because the mean of its divisors is an integer number (11051050493745).

Almost surely, 2^{22102100987489} is an apocalyptic number.

It is an amenable number.

22102100987489 is a deficient number, since it is larger than the sum of its proper divisors (1).

22102100987489 is an equidigital number, since it uses as much as digits as its factorization.

22102100987489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1161216, while the sum is 53.

The spelling of 22102100987489 in words is "twenty-two trillion, one hundred two billion, one hundred million, nine hundred eighty-seven thousand, four hundred eighty-nine".