16220233 has 2 divisors, whose sum is σ = 16220234. Its totient is φ = 16220232.

The previous prime is 16220219. The next prime is 16220249. The reversal of 16220233 is 33202261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10445824 + 5774409 = 3232^2 + 2403^2 .

It is an emirp because it is prime and its reverse (33202261) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16220233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16220233.

It is not a weakly prime, because it can be changed into another prime (16220263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8110116 + 8110117.

It is an arithmetic number, because the mean of its divisors is an integer number (8110117).

Almost surely, 2^16220233 is an apocalyptic number.

It is an amenable number.

16220233 is a deficient number, since it is larger than the sum of its proper divisors (1).

16220233 is an equidigital number, since it uses as much as digits as its factorization.

16220233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 16220233 is about 4027.4350398237. The cubic root of 16220233 is about 253.1350963407.

Adding to 16220233 its reverse (33202261), we get a palindrome (49422494).

The spelling of 16220233 in words is "sixteen million, two hundred twenty thousand, two hundred thirty-three".