16205213 has 2 divisors, whose sum is σ = 16205214. Its totient is φ = 16205212.

The previous prime is 16205207. The next prime is 16205221. The reversal of 16205213 is 31250261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12096484 + 4108729 = 3478^2 + 2027^2 .

It is a cyclic number.

It is not a de Polignac number, because 16205213 - 2¹⁰ = 16204189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16205243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8102606 + 8102607.

It is an arithmetic number, because the mean of its divisors is an integer number (8102607).

Almost surely, 2^16205213 is an apocalyptic number.

It is an amenable number.

16205213 is a deficient number, since it is larger than the sum of its proper divisors (1).

16205213 is an equidigital number, since it uses as much as digits as its factorization.

16205213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 16205213 is about 4025.5698975425. The cubic root of 16205213 is about 253.0569375100.

Adding to 16205213 its reverse (31250261), we get a palindrome (47455474).

The spelling of 16205213 in words is "sixteen million, two hundred five thousand, two hundred thirteen".