13121255 has 8 divisors (see below), whose sum is σ = 17994912. Its totient is φ = 8997408.

The previous prime is 13121243. The next prime is 13121257. The reversal of 13121255 is 55212131.

It is a happy number.

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

It is not a de Polignac number, because 13121255 - 2⁸ = 13120999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187412 + ... + 187481.

It is an arithmetic number, because the mean of its divisors is an integer number (2249364).

Almost surely, 2^13121255 is an apocalyptic number.

13121255 is a deficient number, since it is larger than the sum of its proper divisors (4873657).

13121255 is an equidigital number, since it uses as much as digits as its factorization.

13121255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374905.

The product of its digits is 300, while the sum is 20.

The square root of 13121255 is about 3622.3272905689. The cubic root of 13121255 is about 235.8622616258.

Adding to 13121255 its reverse (55212131), we get a palindrome (68333386).

The spelling of 13121255 in words is "thirteen million, one hundred twenty-one thousand, two hundred fifty-five".