13122566 has 4 divisors (see below), whose sum is σ = 19683852. Its totient is φ = 6561282.

The previous prime is 13122547. The next prime is 13122601. The reversal of 13122566 is 66522131.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×13122566³ (a number of 22 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3280640 + ... + 3280643.

It is an arithmetic number, because the mean of its divisors is an integer number (4920963).

Almost surely, 2^13122566 is an apocalyptic number.

13122566 is a deficient number, since it is larger than the sum of its proper divisors (6561286).

13122566 is an equidigital number, since it uses as much as digits as its factorization.

13122566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6561285.

The product of its digits is 2160, while the sum is 26.

The square root of 13122566 is about 3622.5082470576. The cubic root of 13122566 is about 235.8701166958.

Adding to 13122566 its reverse (66522131), we get a palindrome (79644697).

The spelling of 13122566 in words is "thirteen million, one hundred twenty-two thousand, five hundred sixty-six".