13121451 has 12 divisors (see below), whose sum is σ = 21660912. Its totient is φ = 7497936.

The previous prime is 13121441. The next prime is 13121453. The reversal of 13121451 is 15412131.

It is not a de Polignac number, because 13121451 - 2¹⁰ = 13120427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13121453) 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 11 ways as a sum of consecutive naturals, for example, 104076 + ... + 104201.

It is an arithmetic number, because the mean of its divisors is an integer number (1805076).

Almost surely, 2^13121451 is an apocalyptic number.

13121451 is a deficient number, since it is larger than the sum of its proper divisors (8539461).

13121451 is a wasteful number, since it uses less digits than its factorization.

13121451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208290 (or 208287 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 13121451 is about 3622.3543448978. The cubic root of 13121451 is about 235.8634360250.

Adding to 13121451 its reverse (15412131), we get a palindrome (28533582).

The spelling of 13121451 in words is "thirteen million, one hundred twenty-one thousand, four hundred fifty-one".