1200110111100 has 108 divisors (see below), whose sum is σ = 3762353256480. Its totient is φ = 319971955200.

The previous prime is 1200110111047. The next prime is 1200110111117. The reversal of 1200110111100 is 11110110021.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 5023156 + ... + 5256644.

Almost surely, 2^{1200110111100} is an apocalyptic number.

1200110111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200110111100 is an abundant number, since it is smaller than the sum of its proper divisors (2562243145380).

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

1200110111100 is a wasteful number, since it uses less digits than its factorization.

1200110111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239220 (or 239210 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 1200110111100 its reverse (11110110021), we get a palindrome (1211220221121).

The spelling of 1200110111100 in words is "one trillion, two hundred billion, one hundred ten million, one hundred eleven thousand, one hundred".