12135430444 has 12 divisors (see below), whose sum is σ = 21239402968. Its totient is φ = 6067029600.

The previous prime is 12135430421. The next prime is 12135430471. The reversal of 12135430444 is 44403453121.

It is a super-2 number, since 2×12135430444² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130497 + ... + 203224.

Almost surely, 2^12135430444 is an apocalyptic number.

It is an amenable number.

12135430444 is a deficient number, since it is larger than the sum of its proper divisors (9103972524).

12135430444 is a wasteful number, since it uses less digits than its factorization.

12135430444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342816 (or 342814 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 12135430444 its reverse (44403453121), we get a palindrome (56538883565).

The spelling of 12135430444 in words is "twelve billion, one hundred thirty-five million, four hundred thirty thousand, four hundred forty-four".