12001020011112 has 64 divisors (see below), whose sum is σ = 34153100444160. Its totient is φ = 3478556523200.

The previous prime is 12001020011107. The next prime is 12001020011117. The reversal of 12001020011112 is 21111002010021.

It is an interprime number because it is at equal distance from previous prime (12001020011107) and next prime (12001020011117).

It is a super-2 number, since 2×12001020011112² (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 (12001020011117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 988220214 + ... + 988232357.

It is an arithmetic number, because the mean of its divisors is an integer number (533642194440).

Almost surely, 2^{12001020011112} is an apocalyptic number.

12001020011112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12001020011112 is an abundant number, since it is smaller than the sum of its proper divisors (22152080433048).

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

12001020011112 is a wasteful number, since it uses less digits than its factorization.

12001020011112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1976452614 (or 1976452610 counting only the distinct ones).

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

Adding to 12001020011112 its reverse (21111002010021), we get a palindrome (33112022021133).

The spelling of 12001020011112 in words is "twelve trillion, one billion, twenty million, eleven thousand, one hundred twelve".