12135114442 has 36 divisors (see below), whose sum is σ = 20563825590. Its totient is φ = 5366734560.

The previous prime is 12135114421. The next prime is 12135114443. The reversal of 12135114442 is 24441153121.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 10826194401 + 1308920041 = 104049^2 + 36179^2 .

It is a super-2 number, since 2×12135114442² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12135114442.

It is not an unprimeable number, because it can be changed into a prime (12135114443) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 312984 + ... + 349612.

Almost surely, 2^12135114442 is an apocalyptic number.

12135114442 is a deficient number, since it is larger than the sum of its proper divisors (8428711148).

12135114442 is a wasteful number, since it uses less digits than its factorization.

12135114442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36727 (or 36679 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

Adding to 12135114442 its reverse (24441153121), we get a palindrome (36576267563).

The spelling of 12135114442 in words is "twelve billion, one hundred thirty-five million, one hundred fourteen thousand, four hundred forty-two".