12131200422 has 48 divisors (see below), whose sum is σ = 29214785808. Its totient is φ = 3606757440.

The previous prime is 12131200387. The next prime is 12131200423. The reversal of 12131200422 is 22400213121.

It is a happy number.

12131200422 is a `hidden beast` number, since 12 + 1 + 31 + 200 + 422 = 666.

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 = 12131200395 and 12131200404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131200423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 567513 + ... + 588500.

It is an arithmetic number, because the mean of its divisors is an integer number (608641371).

Almost surely, 2^12131200422 is an apocalyptic number.

12131200422 is an abundant number, since it is smaller than the sum of its proper divisors (17083585386).

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

12131200422 is a wasteful number, since it uses less digits than its factorization.

12131200422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156085 (or 1156082 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12131200422 its reverse (22400213121), we get a palindrome (34531413543).

The spelling of 12131200422 in words is "twelve billion, one hundred thirty-one million, two hundred thousand, four hundred twenty-two".