12591122 has 8 divisors (see below), whose sum is σ = 19024956. Its totient is φ = 6249472.

The previous prime is 12591043. The next prime is 12591149. The reversal of 12591122 is 22119521.

It can be written as a sum of positive squares in 2 ways, for example, as 12538681 + 52441 = 3541^2 + 229^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22703 + ... + 23250.

Almost surely, 2^12591122 is an apocalyptic number.

12591122 is a deficient number, since it is larger than the sum of its proper divisors (6433834).

12591122 is a wasteful number, since it uses less digits than its factorization.

12591122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46092.

The product of its digits is 360, while the sum is 23.

The square root of 12591122 is about 3548.3971029184. The cubic root of 12591122 is about 232.6420113647.

The spelling of 12591122 in words is "twelve million, five hundred ninety-one thousand, one hundred twenty-two".