11331432220 has 12 divisors (see below), whose sum is σ = 23796007704. Its totient is φ = 4532572880.

The previous prime is 11331432209. The next prime is 11331432223. The reversal of 11331432220 is 2223413311.

It is a junction number, because it is equal to n+sod(n) for n = 11331432191 and 11331432200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331432223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283285786 + ... + 283285825.

It is an arithmetic number, because the mean of its divisors is an integer number (1983000642).

Almost surely, 2^11331432220 is an apocalyptic number.

11331432220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11331432220 is an abundant number, since it is smaller than the sum of its proper divisors (12464575484).

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

11331432220 is a wasteful number, since it uses less digits than its factorization.

11331432220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566571620 (or 566571618 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 11331432220 its reverse (2223413311), we get a palindrome (13554845531).

The spelling of 11331432220 in words is "eleven billion, three hundred thirty-one million, four hundred thirty-two thousand, two hundred twenty".