11122111121200 has 60 divisors (see below), whose sum is σ = 26726289084360. Its totient is φ = 4447942535680.

The previous prime is 11122111121189. The next prime is 11122111121221. The reversal of 11122111121200 is 212111122111.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 841210 + ... + 4790809.

It is an arithmetic number, because the mean of its divisors is an integer number (445438151406).

Almost surely, 2^{11122111121200} is an apocalyptic number.

11122111121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11122111121200 is an abundant number, since it is smaller than the sum of its proper divisors (15604177963160).

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

11122111121200 is a wasteful number, since it uses less digits than its factorization.

11122111121200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5636974 (or 5636963 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 11122111121200 its reverse (212111122111), we get a palindrome (11334222243311).

The spelling of 11122111121200 in words is "eleven trillion, one hundred twenty-two billion, one hundred eleven million, one hundred twenty-one thousand, two hundred".