11100421220 has 24 divisors (see below), whose sum is σ = 26641011264. Its totient is φ = 3805858656.

The previous prime is 11100421187. The next prime is 11100421249. The reversal of 11100421220 is 2212400111.

It is a happy number.

11100421220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11100421220² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 11100421195 and 11100421204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39644222 + ... + 39644501.

It is an arithmetic number, because the mean of its divisors is an integer number (1110042136).

Almost surely, 2^11100421220 is an apocalyptic number.

11100421220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11100421220 is an abundant number, since it is smaller than the sum of its proper divisors (15540590044).

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

11100421220 is a wasteful number, since it uses less digits than its factorization.

11100421220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79288739 (or 79288737 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 11100421220 its reverse (2212400111), we get a palindrome (13312821331).

The spelling of 11100421220 in words is "eleven billion, one hundred million, four hundred twenty-one thousand, two hundred twenty".