12210112111985 has 12 divisors (see below), whose sum is σ = 14768414204148. Its totient is φ = 9691175533536.

The previous prime is 12210112111949. The next prime is 12210112111987. The reversal of 12210112111985 is 58911121101221.

12210112111985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 6380185965409 + 5829926146576 = 2525903^2 + 2414524^2 .

It is not a de Polignac number, because 12210112111985 - 2¹⁸ = 12210111849841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12210112111987) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75622202 + ... + 75783491.

It is an arithmetic number, because the mean of its divisors is an integer number (1230701183679).

Almost surely, 2^{12210112111985} is an apocalyptic number.

It is an amenable number.

12210112111985 is a deficient number, since it is larger than the sum of its proper divisors (2558302092163).

12210112111985 is an equidigital number, since it uses as much as digits as its factorization.

12210112111985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151405952 (or 151405825 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 35.

The spelling of 12210112111985 in words is "twelve trillion, two hundred ten billion, one hundred twelve million, one hundred eleven thousand, nine hundred eighty-five".