12720163 has 2 divisors, whose sum is σ = 12720164. Its totient is φ = 12720162.

The previous prime is 12720161. The next prime is 12720179. The reversal of 12720163 is 36102721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12720163 - 2¹ = 12720161 is a prime.

Together with 12720161, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12720161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6360081 + 6360082.

It is an arithmetic number, because the mean of its divisors is an integer number (6360082).

Almost surely, 2^12720163 is an apocalyptic number.

12720163 is a deficient number, since it is larger than the sum of its proper divisors (1).

12720163 is an equidigital number, since it uses as much as digits as its factorization.

12720163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 12720163 is about 3566.5337514175. The cubic root of 12720163 is about 233.4340610457.

Adding to 12720163 its reverse (36102721), we get a palindrome (48822884).

The spelling of 12720163 in words is "twelve million, seven hundred twenty thousand, one hundred sixty-three".