216244033 has 4 divisors (see below), whose sum is σ = 221273008. Its totient is φ = 211215060.

The previous prime is 216243991. The next prime is 216244057. The reversal of 216244033 is 330442612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 216244033 - 2¹⁷ = 216112961 is a prime.

It is a super-2 number, since 2×216244033² = 93522963616210178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 216243989 and 216244007.

It is not an unprimeable number, because it can be changed into a prime (216247033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2514423 + ... + 2514508.

It is an arithmetic number, because the mean of its divisors is an integer number (55318252).

Almost surely, 2^216244033 is an apocalyptic number.

It is an amenable number.

216244033 is a deficient number, since it is larger than the sum of its proper divisors (5028975).

216244033 is an equidigital number, since it uses as much as digits as its factorization.

216244033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5028974.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 216244033 is about 14705.2382843666. The cubic root of 216244033 is about 600.2258714410.

Adding to 216244033 its reverse (330442612), we get a palindrome (546686645).

The spelling of 216244033 in words is "two hundred sixteen million, two hundred forty-four thousand, thirty-three".