111112222021200 has 270 divisors, whose sum is σ = 396293309624394. Its totient is φ = 28829115786240.

The previous prime is 111112222021189. The next prime is 111112222021261. The reversal of 111112222021200 is 2120222211111.

111112222021200 is a `hidden beast` number, since 1 + 111 + 122 + 220 + 212 + 0 + 0 = 666.

It can be written as a sum of positive squares in 9 ways, for example, as 2265651123264 + 108846570897936 = 1505208^2 + 10432956^2 .

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 53 ways as a sum of consecutive naturals, for example, 6344247 + ... + 16201046.

Almost surely, 2^{111112222021200} is an apocalyptic number.

111112222021200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111112222021200 is an abundant number, since it is smaller than the sum of its proper divisors (285181087603194).

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

111112222021200 is a wasteful number, since it uses less digits than its factorization.

111112222021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22545391 (or 22545340 counting only the distinct ones).

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

Adding to 111112222021200 its reverse (2120222211111), we get a palindrome (113232444232311).

The spelling of 111112222021200 in words is "one hundred eleven trillion, one hundred twelve billion, two hundred twenty-two million, twenty-one thousand, two hundred".