11220220211100 has 144 divisors (see below), whose sum is σ = 32953913731200. Its totient is φ = 2946905406720.

The previous prime is 11220220211099. The next prime is 11220220211113. The reversal of 11220220211100 is 111202202211.

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 11220220211100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 128174146 + ... + 128261654.

Almost surely, 2^{11220220211100} is an apocalyptic number.

11220220211100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11220220211100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16476956865600).

11220220211100 is an abundant number, since it is smaller than the sum of its proper divisors (21733693520100).

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

11220220211100 is a wasteful number, since it uses less digits than its factorization.

11220220211100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93972 (or 93965 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11220220211100 its reverse (111202202211), we get a palindrome (11331422413311).

The spelling of 11220220211100 in words is "eleven trillion, two hundred twenty billion, two hundred twenty million, two hundred eleven thousand, one hundred".