216247012 has 24 divisors (see below), whose sum is σ = 395644032. Its totient is φ = 103224000.

The previous prime is 216247001. The next prime is 216247019. The reversal of 216247012 is 210742612.

It is not an unprimeable number, because it can be changed into a prime (216247019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53337 + ... + 57247.

It is an arithmetic number, because the mean of its divisors is an integer number (16485168).

Almost surely, 2^216247012 is an apocalyptic number.

It is an amenable number.

216247012 is a deficient number, since it is larger than the sum of its proper divisors (179397020).

216247012 is a wasteful number, since it uses less digits than its factorization.

216247012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4539 (or 4537 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 216247012 is about 14705.3395744539. The cubic root of 216247012 is about 600.2286276861.

Adding to 216247012 its reverse (210742612), we get a palindrome (426989624).

The spelling of 216247012 in words is "two hundred sixteen million, two hundred forty-seven thousand, twelve".