11212220111200 has 72 divisors (see below), whose sum is σ = 28039438095480. Its totient is φ = 4375500518400.

The previous prime is 11212220111119. The next prime is 11212220111203. The reversal of 11212220111200 is 211102221211.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212220111203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170885190 + ... + 170950789.

It is an arithmetic number, because the mean of its divisors is an integer number (389436640215).

Almost surely, 2^{11212220111200} is an apocalyptic number.

11212220111200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11212220111200 is an abundant number, since it is smaller than the sum of its proper divisors (16827217984280).

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

11212220111200 is a wasteful number, since it uses less digits than its factorization.

11212220111200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341836040 (or 341836027 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11212220111200 its reverse (211102221211), we get a palindrome (11423322332411).

The spelling of 11212220111200 in words is "eleven trillion, two hundred twelve billion, two hundred twenty million, one hundred eleven thousand, two hundred".