1200012101112 has 64 divisors (see below), whose sum is σ = 3352583727360. Its totient is φ = 354770758400.

The previous prime is 1200012101081. The next prime is 1200012101177. The reversal of 1200012101112 is 2111012100021.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55422108 + ... + 55443755.

It is an arithmetic number, because the mean of its divisors is an integer number (52384120740).

Almost surely, 2^{1200012101112} is an apocalyptic number.

1200012101112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1200012101112 is an abundant number, since it is smaller than the sum of its proper divisors (2152571626248).

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

1200012101112 is a wasteful number, since it uses less digits than its factorization.

1200012101112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110865924 (or 110865920 counting only the distinct ones).

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

Adding to 1200012101112 its reverse (2111012100021), we get a palindrome (3311024201133).

The spelling of 1200012101112 in words is "one trillion, two hundred billion, twelve million, one hundred one thousand, one hundred twelve".