2122201220989 has 2 divisors, whose sum is σ = 2122201220990. Its totient is φ = 2122201220988.

The previous prime is 2122201220903. The next prime is 2122201221037. The reversal of 2122201220989 is 9890221022212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1941401928964 + 180799292025 = 1393342^2 + 425205^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122201220989 - 2¹³ = 2122201212797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122201224989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061100610494 + 1061100610495.

It is an arithmetic number, because the mean of its divisors is an integer number (1061100610495).

Almost surely, 2^{2122201220989} is an apocalyptic number.

It is an amenable number.

2122201220989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122201220989 is an equidigital number, since it uses as much as digits as its factorization.

2122201220989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 40.

The spelling of 2122201220989 in words is "two trillion, one hundred twenty-two billion, two hundred one million, two hundred twenty thousand, nine hundred eighty-nine".