11100000221220 has 96 divisors (see below), whose sum is σ = 31378768848000. Its totient is φ = 2931660457984.

The previous prime is 11100000221207. The next prime is 11100000221227. The reversal of 11100000221220 is 2212200000111.

It is a super-2 number, since 2×11100000221220² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 11100000221196 and 11100000221205.

It is not an unprimeable number, because it can be changed into a prime (11100000221227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1313116 + ... + 4891244.

It is an arithmetic number, because the mean of its divisors is an integer number (326862175500).

Almost surely, 2^{11100000221220} is an apocalyptic number.

11100000221220 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 11100000221220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15689384424000).

11100000221220 is an abundant number, since it is smaller than the sum of its proper divisors (20278768626780).

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

11100000221220 is a wasteful number, since it uses less digits than its factorization.

11100000221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3578637 (or 3578635 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 11100000221220 its reverse (2212200000111), we get a palindrome (13312200221331).

The spelling of 11100000221220 in words is "eleven trillion, one hundred billion, two hundred twenty-one thousand, two hundred twenty".