11222201021200 has 120 divisors (see below), whose sum is σ = 29322766488456. Its totient is φ = 4102556160000.

The previous prime is 11222201021197. The next prime is 11222201021221. The reversal of 11222201021200 is 212010222211.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 105684808464 + 11116516212736 = 325092^2 + 3334144^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10158541 + ... + 11208940.

Almost surely, 2^{11222201021200} is an apocalyptic number.

11222201021200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11222201021200 is an abundant number, since it is smaller than the sum of its proper divisors (18100565467256).

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

11222201021200 is a wasteful number, since it uses less digits than its factorization.

11222201021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21367613 (or 21367602 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11222201021200 its reverse (212010222211), we get a palindrome (11434211243411).

The spelling of 11222201021200 in words is "eleven trillion, two hundred twenty-two billion, two hundred one million, twenty-one thousand, two hundred".