111200121200 has 120 divisors (see below), whose sum is σ = 323284120992. Its totient is φ = 35883048960.

The previous prime is 111200121143. The next prime is 111200121211. The reversal of 111200121200 is 2121002111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1120469 + ... + 1215668.

Almost surely, 2^111200121200 is an apocalyptic number.

111200121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111200121200 is an abundant number, since it is smaller than the sum of its proper divisors (212083999792).

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

111200121200 is a wasteful number, since it uses less digits than its factorization.

111200121200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2336179 (or 2336168 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 111200121200 its reverse (2121002111), we get a palindrome (113321123311).

The spelling of 111200121200 in words is "one hundred eleven billion, two hundred million, one hundred twenty-one thousand, two hundred".