111010101121200 has 120 divisors (see below), whose sum is σ = 355672007274688. Its totient is φ = 29596895504640.

The previous prime is 111010101121181. The next prime is 111010101121247. The reversal of 111010101121200 is 2121101010111.

It is a tau number, because it is divible by the number of its divisors (120).

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

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, 2928622 + ... + 15185421.

Almost surely, 2^{111010101121200} is an apocalyptic number.

111010101121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111010101121200 is an abundant number, since it is smaller than the sum of its proper divisors (244661906153488).

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

111010101121200 is a wasteful number, since it uses less digits than its factorization.

111010101121200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18119171 (or 18119160 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 111010101121200 its reverse (2121101010111), we get a palindrome (113131202131311).

The spelling of 111010101121200 in words is "one hundred eleven trillion, ten billion, one hundred one million, one hundred twenty-one thousand, two hundred".