11130231220 has 96 divisors (see below), whose sum is σ = 24453273600. Its totient is φ = 4251502080.

The previous prime is 11130231157. The next prime is 11130231223. The reversal of 11130231220 is 2213203111.

It is a junction number, because it is equal to n+sod(n) for n = 11130231194 and 11130231203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11130231223) 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, 18336157 + ... + 18336763.

It is an arithmetic number, because the mean of its divisors is an integer number (254721600).

Almost surely, 2^11130231220 is an apocalyptic number.

11130231220 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 11130231220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12226636800).

11130231220 is an abundant number, since it is smaller than the sum of its proper divisors (13323042380).

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

11130231220 is a wasteful number, since it uses less digits than its factorization.

11130231220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073 (or 1071 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11130231220 its reverse (2213203111), we get a palindrome (13343434331).

The spelling of 11130231220 in words is "eleven billion, one hundred thirty million, two hundred thirty-one thousand, two hundred twenty".