216512333 has 2 divisors, whose sum is σ = 216512334. Its totient is φ = 216512332.

The previous prime is 216512321. The next prime is 216512369. The reversal of 216512333 is 333215612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152720164 + 63792169 = 12358^2 + 7987^2 .

It is a cyclic number.

It is not a de Polignac number, because 216512333 - 2⁶ = 216512269 is a prime.

It is a super-2 number, since 2×216512333² = 93755180682205778, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216511333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108256166 + 108256167.

It is an arithmetic number, because the mean of its divisors is an integer number (108256167).

Almost surely, 2^216512333 is an apocalyptic number.

It is an amenable number.

216512333 is a deficient number, since it is larger than the sum of its proper divisors (1).

216512333 is an equidigital number, since it uses as much as digits as its factorization.

216512333 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 26.

The square root of 216512333 is about 14714.3580559942. The cubic root of 216512333 is about 600.4740078364.

Adding to 216512333 its reverse (333215612), we get a palindrome (549727945).

The spelling of 216512333 in words is "two hundred sixteen million, five hundred twelve thousand, three hundred thirty-three".