12555122 has 8 divisors (see below), whose sum is σ = 18854316. Its totient is φ = 6270352.

The previous prime is 12555121. The next prime is 12555149. The reversal of 12555122 is 22155521.

It can be written as a sum of positive squares in 2 ways, for example, as 10426441 + 2128681 = 3229^2 + 1459^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12555121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1073 + ... + 5124.

Almost surely, 2^12555122 is an apocalyptic number.

12555122 is a deficient number, since it is larger than the sum of its proper divisors (6299194).

12555122 is a wasteful number, since it uses less digits than its factorization.

12555122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7212.

The product of its digits is 1000, while the sum is 23.

The square root of 12555122 is about 3543.3207588363. The cubic root of 12555122 is about 232.4200796725.

The spelling of 12555122 in words is "twelve million, five hundred fifty-five thousand, one hundred twenty-two".