216022233 has 48 divisors (see below), whose sum is σ = 352550016. Its totient is φ = 117089280.

The previous prime is 216022231. The next prime is 216022237. The reversal of 216022233 is 332220612.

216022233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 216022233 - 2¹ = 216022231 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (216022231) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 611785 + ... + 612137.

It is an arithmetic number, because the mean of its divisors is an integer number (7344792).

Almost surely, 2^216022233 is an apocalyptic number.

216022233 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

216022233 is a deficient number, since it is larger than the sum of its proper divisors (136527783).

216022233 is a wasteful number, since it uses less digits than its factorization.

216022233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574 (or 567 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 216022233 is about 14697.6948192565. The cubic root of 216022233 is about 600.0205854048.

Adding to 216022233 its reverse (332220612), we get a palindrome (548242845).

The spelling of 216022233 in words is "two hundred sixteen million, twenty-two thousand, two hundred thirty-three".