111222120121200 has 360 divisors, whose sum is σ = 427344471405696. Its totient is φ = 26560505664000.

The previous prime is 111222120121181. The next prime is 111222120121219. The reversal of 111222120121200 is 2121021222111.

111222120121200 is a `hidden beast` number, since 1 + 1 + 1 + 222 + 120 + 121 + 200 = 666.

111222120121200 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (111222120121181) and next prime (111222120121219).

It is a tau number, because it is divible by the number of its divisors (360).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 18306796 + ... + 23613195.

Almost surely, 2^{111222120121200} is an apocalyptic number.

111222120121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111222120121200 is an abundant number, since it is smaller than the sum of its proper divisors (316122351284496).

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

111222120121200 is a wasteful number, since it uses less digits than its factorization.

111222120121200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41920093 (or 41920079 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111222120121200 its reverse (2121021222111), we get a palindrome (113343141343311).

The spelling of 111222120121200 in words is "one hundred eleven trillion, two hundred twenty-two billion, one hundred twenty million, one hundred twenty-one thousand, two hundred".