11100112021220 has 96 divisors (see below), whose sum is σ = 24757987516416. Its totient is φ = 4171837824000.

The previous prime is 11100112021217. The next prime is 11100112021223. The reversal of 11100112021220 is 2212021100111.

11100112021220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11100112021217) and next prime (11100112021223).

It is a junction number, because it is equal to n+sod(n) for n = 11100112021195 and 11100112021204.

It is not an unprimeable number, because it can be changed into a prime (11100112021223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4959800 + ... + 6841040.

It is an arithmetic number, because the mean of its divisors is an integer number (257895703296).

Almost surely, 2^{11100112021220} is an apocalyptic number.

11100112021220 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 11100112021220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12378993758208).

11100112021220 is an abundant number, since it is smaller than the sum of its proper divisors (13657875495196).

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

11100112021220 is a wasteful number, since it uses less digits than its factorization.

11100112021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881501 (or 1881499 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11100112021220 its reverse (2212021100111), we get a palindrome (13312133121331).

The spelling of 11100112021220 in words is "eleven trillion, one hundred billion, one hundred twelve million, twenty-one thousand, two hundred twenty".