12120111000012 has 48 divisors (see below), whose sum is σ = 29771635420800. Its totient is φ = 3827025250560.

The previous prime is 12120110999989. The next prime is 12120111000013. The reversal of 12120111000012 is 21000011102121.

It is a super-2 number, since 2×12120111000012² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (12120111000013) 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 15 ways as a sum of consecutive naturals, for example, 309789 + ... + 4933172.

It is an arithmetic number, because the mean of its divisors is an integer number (620242404600).

Almost surely, 2^{12120111000012} is an apocalyptic number.

12120111000012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12120111000012 is an abundant number, since it is smaller than the sum of its proper divisors (17651524420788).

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

12120111000012 is a wasteful number, since it uses less digits than its factorization.

12120111000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5253126 (or 5253124 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12120111000012 its reverse (21000011102121), we get a palindrome (33120122102133).

The spelling of 12120111000012 in words is "twelve trillion, one hundred twenty billion, one hundred eleven million, twelve", and thus it is an aban number.