12131230220 has 24 divisors (see below), whose sum is σ = 25477705008. Its totient is φ = 4852088000.

The previous prime is 12131230169. The next prime is 12131230271. The reversal of 12131230220 is 2203213121.

It is an interprime number because it is at equal distance from previous prime (12131230169) and next prime (12131230271).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377795 + ... + 408645.

It is an arithmetic number, because the mean of its divisors is an integer number (1061571042).

Almost surely, 2^12131230220 is an apocalyptic number.

12131230220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12131230220 is an abundant number, since it is smaller than the sum of its proper divisors (13346474788).

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

12131230220 is a wasteful number, since it uses less digits than its factorization.

12131230220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50521 (or 50519 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12131230220 its reverse (2203213121), we get a palindrome (14334443341).

The spelling of 12131230220 in words is "twelve billion, one hundred thirty-one million, two hundred thirty thousand, two hundred twenty".