11111211200 has 42 divisors (see below), whose sum is σ = 27340527996. Its totient is φ = 4444483840.

The previous prime is 11111211179. The next prime is 11111211247. The reversal of 11111211200 is 211211111.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3470654 + ... + 3473853.

Almost surely, 2^11111211200 is an apocalyptic number.

11111211200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11111211200 is an abundant number, since it is smaller than the sum of its proper divisors (16229316796).

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

11111211200 is an equidigital number, since it uses as much as digits as its factorization.

11111211200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6944529 (or 6944514 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11111211200 its reverse (211211111), we get a palindrome (11322422311).

The spelling of 11111211200 in words is "eleven billion, one hundred eleven million, two hundred eleven thousand, two hundred".