11121121121200 has 60 divisors (see below), whose sum is σ = 26762511365440. Its totient is φ = 4441119770880.

The previous prime is 11121121121147. The next prime is 11121121121203. The reversal of 11121121121200 is 212112112111.

11121121121200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (11121121121203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22659015 + ... + 23144614.

Almost surely, 2^{11121121121200} is an apocalyptic number.

11121121121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11121121121200 is an abundant number, since it is smaller than the sum of its proper divisors (15641390244240).

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

11121121121200 is a wasteful number, since it uses less digits than its factorization.

11121121121200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45804254 (or 45804243 counting only the distinct ones).

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

Adding to 11121121121200 its reverse (212112112111), we get a palindrome (11333233233311).

The spelling of 11121121121200 in words is "eleven trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred twenty-one thousand, two hundred".