11112221121200 has 60 divisors (see below), whose sum is σ = 26697518174328. Its totient is φ = 4444820697600.

The previous prime is 11112221121121. The next prime is 11112221121217. The reversal of 11112221121200 is 212112221111.

11112221121200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 32294060 + ... + 32636340.

Almost surely, 2^{11112221121200} is an apocalyptic number.

11112221121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11112221121200 is an abundant number, since it is smaller than the sum of its proper divisors (15585297053128).

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

11112221121200 is a wasteful number, since it uses less digits than its factorization.

11112221121200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423462 (or 423451 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11112221121200 its reverse (212112221111), we get a palindrome (11324333342311).

The spelling of 11112221121200 in words is "eleven trillion, one hundred twelve billion, two hundred twenty-one million, one hundred twenty-one thousand, two hundred".