1200112111100 has 108 divisors (see below), whose sum is σ = 3103314812640. Its totient is φ = 401431161600.

The previous prime is 1200112111091. The next prime is 1200112111111. The reversal of 1200112111100 is 11112110021.

It is a super-3 number, since 3×1200112111100³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2785940 + ... + 3187739.

Almost surely, 2^{1200112111100} is an apocalyptic number.

1200112111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200112111100 is an abundant number, since it is smaller than the sum of its proper divisors (1903202701540).

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

1200112111100 is a wasteful number, since it uses less digits than its factorization.

1200112111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5973748 (or 5973734 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1200112111100 its reverse (11112110021), we get a palindrome (1211224221121).

The spelling of 1200112111100 in words is "one trillion, two hundred billion, one hundred twelve million, one hundred eleven thousand, one hundred".