11222211111200 has 36 divisors (see below), whose sum is σ = 27396222877170. Its totient is φ = 4488884444160.

The previous prime is 11222211111179. The next prime is 11222211111217. The reversal of 11222211111200 is 211111222211.

It can be written as a sum of positive squares in 3 ways, for example, as 6277049203216 + 4945161907984 = 2505404^2 + 2223772^2 .

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, 7013881145 + ... + 7013882744.

Almost surely, 2^{11222211111200} is an apocalyptic number.

11222211111200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11222211111200 is an abundant number, since it is smaller than the sum of its proper divisors (16174011765970).

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

11222211111200 is a wasteful number, since it uses less digits than its factorization.

11222211111200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14027763909 (or 14027763896 counting only the distinct ones).

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

Adding to 11222211111200 its reverse (211111222211), we get a palindrome (11433322333411).

The spelling of 11222211111200 in words is "eleven trillion, two hundred twenty-two billion, two hundred eleven million, one hundred eleven thousand, two hundred".