13122147 has 8 divisors (see below), whose sum is σ = 18525456. Its totient is φ = 8233472.

The previous prime is 13122133. The next prime is 13122157. The reversal of 13122147 is 74122131.

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

It is a cyclic number.

It is not a de Polignac number, because 13122147 - 2²⁰ = 12073571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13122127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128598 + ... + 128699.

It is an arithmetic number, because the mean of its divisors is an integer number (2315682).

Almost surely, 2^13122147 is an apocalyptic number.

13122147 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13122147 is a deficient number, since it is larger than the sum of its proper divisors (5403309).

13122147 is a wasteful number, since it uses less digits than its factorization.

13122147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257317.

The product of its digits is 336, while the sum is 21.

The square root of 13122147 is about 3622.4504137393. The cubic root of 13122147 is about 235.8676062459.

Adding to 13122147 its reverse (74122131), we get a palindrome (87244278).

The spelling of 13122147 in words is "thirteen million, one hundred twenty-two thousand, one hundred forty-seven".