111200112100120 has 64 divisors (see below), whose sum is σ = 252523141358400. Its totient is φ = 44067175580160.

The previous prime is 111200112100109. The next prime is 111200112100127. The reversal of 111200112100120 is 21001211002111.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 111200112100120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111200112100127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38820597 + ... + 41586523.

It is an arithmetic number, because the mean of its divisors is an integer number (3945674083725).

Almost surely, 2^{111200112100120} is an apocalyptic number.

111200112100120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111200112100120 is an abundant number, since it is smaller than the sum of its proper divisors (141323029258280).

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

111200112100120 is a wasteful number, since it uses less digits than its factorization.

111200112100120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2775268 (or 2775264 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111200112100120 its reverse (21001211002111), we get a palindrome (132201323102231).

The spelling of 111200112100120 in words is "one hundred eleven trillion, two hundred billion, one hundred twelve million, one hundred thousand, one hundred twenty".