11123121200 has 30 divisors (see below), whose sum is σ = 26723299644. Its totient is φ = 4449248320.

The previous prime is 11123121181. The next prime is 11123121221. The reversal of 11123121200 is 212132111.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13903502 + ... + 13904301.

Almost surely, 2^11123121200 is an apocalyptic number.

11123121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11123121200 is an abundant number, since it is smaller than the sum of its proper divisors (15600178444).

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

11123121200 is a wasteful number, since it uses less digits than its factorization.

11123121200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27807821 (or 27807810 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 11123121200 its reverse (212132111), we get a palindrome (11335253311).

The spelling of 11123121200 in words is "eleven billion, one hundred twenty-three million, one hundred twenty-one thousand, two hundred".