16212817 has 2 divisors, whose sum is σ = 16212818. Its totient is φ = 16212816.

The previous prime is 16212811. The next prime is 16212829. The reversal of 16212817 is 71821261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10042561 + 6170256 = 3169^2 + 2484^2 .

It is a cyclic number.

It is not a de Polignac number, because 16212817 - 2⁷ = 16212689 is a prime.

It is not a weakly prime, because it can be changed into another prime (16212811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8106408 + 8106409.

It is an arithmetic number, because the mean of its divisors is an integer number (8106409).

Almost surely, 2^16212817 is an apocalyptic number.

It is an amenable number.

16212817 is a deficient number, since it is larger than the sum of its proper divisors (1).

16212817 is an equidigital number, since it uses as much as digits as its factorization.

16212817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344, while the sum is 28.

The square root of 16212817 is about 4026.5142493229. The cubic root of 16212817 is about 253.0965121016.

The spelling of 16212817 in words is "sixteen million, two hundred twelve thousand, eight hundred seventeen".