13221827 has 2 divisors, whose sum is σ = 13221828. Its totient is φ = 13221826.

The previous prime is 13221823. The next prime is 13221863. The reversal of 13221827 is 72812231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13221827 - 2² = 13221823 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 13221796 and 13221805.

It is not a weakly prime, because it can be changed into another prime (13221821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610913 + 6610914.

It is an arithmetic number, because the mean of its divisors is an integer number (6610914).

Almost surely, 2^13221827 is an apocalyptic number.

13221827 is a deficient number, since it is larger than the sum of its proper divisors (1).

13221827 is an equidigital number, since it uses as much as digits as its factorization.

13221827 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 26.

The square root of 13221827 is about 3636.1830261966. The cubic root of 13221827 is about 236.4633420887.

The spelling of 13221827 in words is "thirteen million, two hundred twenty-one thousand, eight hundred twenty-seven".