12012131242 has 8 divisors (see below), whose sum is σ = 18018670500. Its totient is φ = 6005907744.

The previous prime is 12012131231. The next prime is 12012131273. The reversal of 12012131242 is 24213121021.

It can be written as a sum of positive squares in 2 ways, for example, as 11785056481 + 227074761 = 108559^2 + 15069^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 80884 + ... + 174832.

Almost surely, 2^12012131242 is an apocalyptic number.

12012131242 is a deficient number, since it is larger than the sum of its proper divisors (6006539258).

12012131242 is an equidigital number, since it uses as much as digits as its factorization.

12012131242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157880.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 12012131242 its reverse (24213121021), we get a palindrome (36225252263).

The spelling of 12012131242 in words is "twelve billion, twelve million, one hundred thirty-one thousand, two hundred forty-two".