11122221200 has 60 divisors (see below), whose sum is σ = 26732317668. Its totient is φ = 4447027200.

The previous prime is 11122221181. The next prime is 11122221211. The reversal of 11122221200 is 212222111.

It can be written as a sum of positive squares in 6 ways, for example, as 176039824 + 10946181376 = 13268^2 + 104624^2 .

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, 1340264 + ... + 1348536.

Almost surely, 2^11122221200 is an apocalyptic number.

11122221200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11122221200 is an abundant number, since it is smaller than the sum of its proper divisors (15610096468).

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

11122221200 is a wasteful number, since it uses less digits than its factorization.

11122221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11652 (or 11641 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 11122221200 its reverse (212222111), we get a palindrome (11334443311).

The spelling of 11122221200 in words is "eleven billion, one hundred twenty-two million, two hundred twenty-one thousand, two hundred".