1200000111100 has 36 divisors (see below), whose sum is σ = 2976000277264. Its totient is φ = 411428609280.

The previous prime is 1200000111083. The next prime is 1200000111131. The reversal of 1200000111100 is 11110000021.

It is a super-3 number, since 3×1200000111100³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (7).

1200000111100 is a modest number, since divided by 111100 gives 12000 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 857142237 + ... + 857143636.

Almost surely, 2^{1200000111100} is an apocalyptic number.

1200000111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200000111100 is an abundant number, since it is smaller than the sum of its proper divisors (1776000166164).

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

1200000111100 is a wasteful number, since it uses less digits than its factorization.

1200000111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714285894 (or 1714285887 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 1200000111100 its reverse (11110000021), we get a palindrome (1211110111121).

The spelling of 1200000111100 in words is "one trillion, two hundred billion, one hundred eleven thousand, one hundred".