13120229 has 4 divisors (see below), whose sum is σ = 13149900. Its totient is φ = 13090560.

The previous prime is 13120213. The next prime is 13120231. The reversal of 13120229 is 92202131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3323329 + 9796900 = 1823^2 + 3130^2 .

It is a cyclic number.

It is not a de Polignac number, because 13120229 - 2⁴ = 13120213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13120229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13120529) 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 3 ways as a sum of consecutive naturals, for example, 14162 + ... + 15059.

It is an arithmetic number, because the mean of its divisors is an integer number (3287475).

Almost surely, 2^13120229 is an apocalyptic number.

It is an amenable number.

13120229 is a deficient number, since it is larger than the sum of its proper divisors (29671).

13120229 is an equidigital number, since it uses as much as digits as its factorization.

13120229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29670.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 13120229 is about 3622.1856661414. The cubic root of 13120229 is about 235.8561138148.

The spelling of 13120229 in words is "thirteen million, one hundred twenty thousand, two hundred twenty-nine".