11040421220 has 96 divisors (see below), whose sum is σ = 24821959680. Its totient is φ = 4115704320.

The previous prime is 11040421151. The next prime is 11040421237. The reversal of 11040421220 is 2212404011.

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, 12172007 + ... + 12172913.

It is an arithmetic number, because the mean of its divisors is an integer number (258562080).

Almost surely, 2^11040421220 is an apocalyptic number.

11040421220 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 11040421220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12410979840).

11040421220 is an abundant number, since it is smaller than the sum of its proper divisors (13781538460).

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

11040421220 is a wasteful number, since it uses less digits than its factorization.

11040421220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653 (or 1651 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 11040421220 its reverse (2212404011), we get a palindrome (13252825231).

The spelling of 11040421220 in words is "eleven billion, forty million, four hundred twenty-one thousand, two hundred twenty".