12655112242 has 4 divisors (see below), whose sum is σ = 18982668366. Its totient is φ = 6327556120.

The previous prime is 12655112219. The next prime is 12655112251. The reversal of 12655112242 is 24221155621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24221155621 = 13 ⋅1863165817.

It can be written as a sum of positive squares in only one way, i.e., 11434238761 + 1220873481 = 106931^2 + 34941^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3163778059 + ... + 3163778062.

Almost surely, 2^12655112242 is an apocalyptic number.

12655112242 is a deficient number, since it is larger than the sum of its proper divisors (6327556124).

12655112242 is an equidigital number, since it uses as much as digits as its factorization.

12655112242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6327556123.

The product of its digits is 9600, while the sum is 31.

Adding to 12655112242 its reverse (24221155621), we get a palindrome (36876267863).

The spelling of 12655112242 in words is "twelve billion, six hundred fifty-five million, one hundred twelve thousand, two hundred forty-two".