12131004212 has 12 divisors (see below), whose sum is σ = 21384216420. Its totient is φ = 6021228096.

The previous prime is 12131004209. The next prime is 12131004247. The reversal of 12131004212 is 21240013121.

It can be written as a sum of positive squares in 2 ways, for example, as 6355916176 + 5775088036 = 79724^2 + 75994^2 .

It is a super-2 number, since 2×12131004212² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 11067887 + ... + 11068982.

It is an arithmetic number, because the mean of its divisors is an integer number (1782018035).

Almost surely, 2^12131004212 is an apocalyptic number.

It is an amenable number.

12131004212 is a deficient number, since it is larger than the sum of its proper divisors (9253212208).

12131004212 is a wasteful number, since it uses less digits than its factorization.

12131004212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22137010 (or 22137008 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12131004212 its reverse (21240013121), we get a palindrome (33371017333).

The spelling of 12131004212 in words is "twelve billion, one hundred thirty-one million, four thousand, two hundred twelve".