11201120111220 has 96 divisors (see below), whose sum is σ = 33852624072960. Its totient is φ = 2750918077440.

The previous prime is 11201120111201. The next prime is 11201120111239. The reversal of 11201120111220 is 2211102110211.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11201120111201) and next prime (11201120111239).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11201120111220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16013401 + ... + 16698240.

It is an arithmetic number, because the mean of its divisors is an integer number (352631500760).

Almost surely, 2^{11201120111220} is an apocalyptic number.

11201120111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11201120111220 is an abundant number, since it is smaller than the sum of its proper divisors (22651503961740).

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

11201120111220 is a wasteful number, since it uses less digits than its factorization.

11201120111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32712105 (or 32712103 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11201120111220 its reverse (2211102110211), we get a palindrome (13412222221431).

The spelling of 11201120111220 in words is "eleven trillion, two hundred one billion, one hundred twenty million, one hundred eleven thousand, two hundred twenty".