12705009124 has 12 divisors (see below), whose sum is σ = 22950984448. Its totient is φ = 6147585000.

The previous prime is 12705009059. The next prime is 12705009137. The reversal of 12705009124 is 42190050721.

It is a super-2 number, since 2×12705009124² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

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, 51229752 + ... + 51229999.

Almost surely, 2^12705009124 is an apocalyptic number.

It is an amenable number.

12705009124 is a deficient number, since it is larger than the sum of its proper divisors (10245975324).

12705009124 is a wasteful number, since it uses less digits than its factorization.

12705009124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102459786 (or 102459784 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

Adding to 12705009124 its reverse (42190050721), we get a palindrome (54895059845).

The spelling of 12705009124 in words is "twelve billion, seven hundred five million, nine thousand, one hundred twenty-four".