11122121122200 has 144 divisors (see below), whose sum is σ = 40747407456600. Its totient is φ = 2696271782400.

The previous prime is 11122121122193. The next prime is 11122121122213. The reversal of 11122121122200 is 222112122111.

11122121122200 is a `hidden beast` number, since 1 + 11 + 221 + 211 + 2 + 220 + 0 = 666.

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 35 ways as a sum of consecutive naturals, for example, 280841845 + ... + 280881444.

Almost surely, 2^{11122121122200} is an apocalyptic number.

11122121122200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11122121122200 is an abundant number, since it is smaller than the sum of its proper divisors (29625286334400).

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

11122121122200 is a wasteful number, since it uses less digits than its factorization.

11122121122200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561723322 (or 561723310 counting only the distinct ones).

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

Adding to 11122121122200 its reverse (222112122111), we get a palindrome (11344233244311).

The spelling of 11122121122200 in words is "eleven trillion, one hundred twenty-two billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred".