12120211221985 has 32 divisors (see below), whose sum is σ = 14952556339200. Its totient is φ = 9427787328960.

The previous prime is 12120211221941. The next prime is 12120211221997. The reversal of 12120211221985 is 58912211202121.

It is not a de Polignac number, because 12120211221985 - 2¹¹ = 12120211219937 is a prime.

It is a super-2 number, since 2×12120211221985² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 92853396 + ... + 92983834.

It is an arithmetic number, because the mean of its divisors is an integer number (467267385600).

Almost surely, 2^{12120211221985} is an apocalyptic number.

It is an amenable number.

12120211221985 is a deficient number, since it is larger than the sum of its proper divisors (2832345117215).

12120211221985 is a wasteful number, since it uses less digits than its factorization.

12120211221985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134101.

The product of its (nonzero) digits is 11520, while the sum is 37.

The spelling of 12120211221985 in words is "twelve trillion, one hundred twenty billion, two hundred eleven million, two hundred twenty-one thousand, nine hundred eighty-five".