216023012 has 12 divisors (see below), whose sum is σ = 400278060. Its totient is φ = 101657856.

The previous prime is 216022979. The next prime is 216023047. The reversal of 216023012 is 210320612.

216023012 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 95374756 + 120648256 = 9766^2 + 10984^2 .

It is a super-3 number, since 3×216023012³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

216023012 is strictly pandigital in base 9.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1588337 + ... + 1588472.

It is an arithmetic number, because the mean of its divisors is an integer number (33356505).

Almost surely, 2^216023012 is an apocalyptic number.

It is an amenable number.

216023012 is a deficient number, since it is larger than the sum of its proper divisors (184255048).

216023012 is a wasteful number, since it uses less digits than its factorization.

216023012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3176830 (or 3176828 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 216023012 is about 14697.7213199870. The cubic root of 216023012 is about 600.0213066508.

Adding to 216023012 its reverse (210320612), we get a palindrome (426343624).

The spelling of 216023012 in words is "two hundred sixteen million, twenty-three thousand, twelve".