11220111220020 has 48 divisors (see below), whose sum is σ = 31416467822208. Its totient is φ = 2992014762880.

The previous prime is 11220111219929. The next prime is 11220111220079. The reversal of 11220111220020 is 2002211102211.

11220111220020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17273530 + ... + 17911310.

It is an arithmetic number, because the mean of its divisors is an integer number (654509746296).

Almost surely, 2^{11220111220020} is an apocalyptic number.

11220111220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11220111220020 is an abundant number, since it is smaller than the sum of its proper divisors (20196356602188).

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

11220111220020 is a wasteful number, since it uses less digits than its factorization.

11220111220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931000 (or 930998 counting only the distinct ones).

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

Adding to 11220111220020 its reverse (2002211102211), we get a palindrome (13222322322231).

The spelling of 11220111220020 in words is "eleven trillion, two hundred twenty billion, one hundred eleven million, two hundred twenty thousand, twenty".