11100021120 has 96 divisors (see below), whose sum is σ = 38329780320. Its totient is φ = 2960004096.

The previous prime is 11100021091. The next prime is 11100021137. The reversal of 11100021120 is 2112000111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 957784 + ... + 969303.

It is an arithmetic number, because the mean of its divisors is an integer number (399268545).

Almost surely, 2^11100021120 is an apocalyptic number.

11100021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11100021120 is an abundant number, since it is smaller than the sum of its proper divisors (27229759200).

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

11100021120 is a wasteful number, since it uses less digits than its factorization.

11100021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1927112 (or 1927097 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11100021120 its reverse (2112000111), we get a palindrome (13212021231).

The spelling of 11100021120 in words is "eleven billion, one hundred million, twenty-one thousand, one hundred twenty".