11122222201200 has 600 divisors, whose sum is σ = 44096880833280. Its totient is φ = 2662159219200.

The previous prime is 11122222201177. The next prime is 11122222201229. The reversal of 11122222201200 is 210222222111.

It is a happy number.

11122222201200 is a `hidden beast` number, since 11 + 12 + 222 + 220 + 1 + 200 = 666.

It is a tau number, because it is divible by the number of its divisors (600).

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 119 ways as a sum of consecutive naturals, for example, 27958087 + ... + 28353113.

Almost surely, 2^{11122222201200} is an apocalyptic number.

11122222201200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11122222201200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22048440416640).

11122222201200 is an abundant number, since it is smaller than the sum of its proper divisors (32974658632080).

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

11122222201200 is a wasteful number, since it uses less digits than its factorization.

11122222201200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395147 (or 395127 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 11122222201200 its reverse (210222222111), we get a palindrome (11332444423311).

The spelling of 11122222201200 in words is "eleven trillion, one hundred twenty-two billion, two hundred twenty-two million, two hundred one thousand, two hundred".