12331130220 has 36 divisors (see below), whose sum is σ = 37404428880. Its totient is φ = 3288301344.

The previous prime is 12331130191. The next prime is 12331130243. The reversal of 12331130220 is 2203113321.

12331130220 is a `hidden beast` number, since 12 + 331 + 1 + 302 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12331130193 and 12331130202.

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, 34252960 + ... + 34253319.

Almost surely, 2^12331130220 is an apocalyptic number.

12331130220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12331130220 is an abundant number, since it is smaller than the sum of its proper divisors (25073298660).

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

12331130220 is a wasteful number, since it uses less digits than its factorization.

12331130220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68506294 (or 68506289 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12331130220 its reverse (2203113321), we get a palindrome (14534243541).

The spelling of 12331130220 in words is "twelve billion, three hundred thirty-one million, one hundred thirty thousand, two hundred twenty".