2122201220985 has 12 divisors (see below), whose sum is σ = 3678482116452. Its totient is φ = 1131840651168.

The previous prime is 2122201220903. The next prime is 2122201220989. The reversal of 2122201220985 is 5890221022212.

2122201220985 is a `hidden beast` number, since 212 + 220 + 12 + 209 + 8 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 799627619961 + 1322573601024 = 894219^2 + 1150032^2 .

It is not a de Polignac number, because 2122201220985 - 2⁹ = 2122201220473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2122201220989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23580013522 + ... + 23580013611.

It is an arithmetic number, because the mean of its divisors is an integer number (306540176371).

Almost surely, 2^{2122201220985} is an apocalyptic number.

It is an amenable number.

2122201220985 is a deficient number, since it is larger than the sum of its proper divisors (1556280895467).

2122201220985 is a wasteful number, since it uses less digits than its factorization.

2122201220985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47160027144 (or 47160027141 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 2122201220985 in words is "two trillion, one hundred twenty-two billion, two hundred one million, two hundred twenty thousand, nine hundred eighty-five".