13812229 has 2 divisors, whose sum is σ = 13812230. Its totient is φ = 13812228.

The previous prime is 13812217. The next prime is 13812233. The reversal of 13812229 is 92221831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10304100 + 3508129 = 3210^2 + 1873^2 .

It is a cyclic number.

It is not a de Polignac number, because 13812229 - 2⁷ = 13812101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13812197 and 13812206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13812209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6906114 + 6906115.

It is an arithmetic number, because the mean of its divisors is an integer number (6906115).

Almost surely, 2^13812229 is an apocalyptic number.

It is an amenable number.

13812229 is a deficient number, since it is larger than the sum of its proper divisors (1).

13812229 is an equidigital number, since it uses as much as digits as its factorization.

13812229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 28.

The square root of 13812229 is about 3716.4807277854. The cubic root of 13812229 is about 239.9318614436.

It can be divided in two parts, 13812 and 229, that added together give a palindrome (14041).

The spelling of 13812229 in words is "thirteen million, eight hundred twelve thousand, two hundred twenty-nine".