11100124420 has 96 divisors (see below), whose sum is σ = 29680680960. Its totient is φ = 3386144640.

The previous prime is 11100124417. The next prime is 11100124457. The reversal of 11100124420 is 2442100111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11100124394 and 11100124403.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4300 + ... + 149059.

It is an arithmetic number, because the mean of its divisors is an integer number (309173760).

Almost surely, 2^11100124420 is an apocalyptic number.

11100124420 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 11100124420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14840340480).

11100124420 is an abundant number, since it is smaller than the sum of its proper divisors (18580556540).

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

11100124420 is a wasteful number, since it uses less digits than its factorization.

11100124420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153433 (or 153431 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11100124420 its reverse (2442100111), we get a palindrome (13542224531).

The spelling of 11100124420 in words is "eleven billion, one hundred million, one hundred twenty-four thousand, four hundred twenty".