12581012 has 12 divisors (see below), whose sum is σ = 22776180. Its totient is φ = 6073536.

The previous prime is 12580993. The next prime is 12581027. The reversal of 12581012 is 21018521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9024016 + 3556996 = 3004^2 + 1886^2 .

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

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, 54113 + ... + 54344.

It is an arithmetic number, because the mean of its divisors is an integer number (1898015).

Almost surely, 2^12581012 is an apocalyptic number.

It is an amenable number.

12581012 is a deficient number, since it is larger than the sum of its proper divisors (10195168).

12581012 is a wasteful number, since it uses less digits than its factorization.

12581012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108490 (or 108488 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 12581012 is about 3546.9722299449. The cubic root of 12581012 is about 232.5797283124.

Adding to 12581012 its reverse (21018521), we get a palindrome (33599533).

The spelling of 12581012 in words is "twelve million, five hundred eighty-one thousand, twelve".