12131403212 has 12 divisors (see below), whose sum is σ = 21232033200. Its totient is φ = 6065108016.

The previous prime is 12131403209. The next prime is 12131403247. The reversal of 12131403212 is 21230413121.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100712 + ... + 185487.

It is an arithmetic number, because the mean of its divisors is an integer number (1769336100).

Almost surely, 2^12131403212 is an apocalyptic number.

It is an amenable number.

12131403212 is a deficient number, since it is larger than the sum of its proper divisors (9100629988).

12131403212 is a wasteful number, since it uses less digits than its factorization.

12131403212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296800 (or 296798 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12131403212 its reverse (21230413121), we get a palindrome (33361816333).

Subtracting 12131403212 from its reverse (21230413121), we obtain a palindrome (9099009909).

The spelling of 12131403212 in words is "twelve billion, one hundred thirty-one million, four hundred three thousand, two hundred twelve".