2012122111986 has 24 divisors (see below), whose sum is σ = 4982397610944. Its totient is φ = 574892031960.

The previous prime is 2012122111981. The next prime is 2012122112041. The reversal of 2012122111986 is 6891112212102.

It is a super-2 number, since 2×2012122111986² (a number of 25 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 2012122111986.

It is not an unprimeable number, because it can be changed into a prime (2012122111981) 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, 7984611430 + ... + 7984611681.

It is an arithmetic number, because the mean of its divisors is an integer number (207599900456).

Almost surely, 2^{2012122111986} is an apocalyptic number.

2012122111986 is an abundant number, since it is smaller than the sum of its proper divisors (2970275498958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2012122111986 is a wasteful number, since it uses less digits than its factorization.

2012122111986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15969223126 (or 15969223123 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 36.

The spelling of 2012122111986 in words is "two trillion, twelve billion, one hundred twenty-two million, one hundred eleven thousand, nine hundred eighty-six".