13220047 has 2 divisors, whose sum is σ = 13220048. Its totient is φ = 13220046.

The previous prime is 13220041. The next prime is 13220057. The reversal of 13220047 is 74002231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13220047 - 2¹⁹ = 12695759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13220041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610023 + 6610024.

It is an arithmetic number, because the mean of its divisors is an integer number (6610024).

Almost surely, 2^13220047 is an apocalyptic number.

13220047 is a deficient number, since it is larger than the sum of its proper divisors (1).

13220047 is an equidigital number, since it uses as much as digits as its factorization.

13220047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 13220047 is about 3635.9382558014. The cubic root of 13220047 is about 236.4527302512.

Adding to 13220047 its reverse (74002231), we get a palindrome (87222278).

The spelling of 13220047 in words is "thirteen million, two hundred twenty thousand, forty-seven".