1216000000216 has 16 divisors (see below), whose sum is σ = 2288113883640. Its totient is φ = 605836297920.

The previous prime is 1216000000211. The next prime is 1216000000261. The reversal of 1216000000216 is 6120000006121.

It is a junction number, because it is equal to n+sod(n) for n = 1216000000193 and 1216000000202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216000000211) 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, 270460386 + ... + 270464881.

Almost surely, 2^{1216000000216} is an apocalyptic number.

It is an amenable number.

1216000000216 is a deficient number, since it is larger than the sum of its proper divisors (1072113883424).

1216000000216 is a wasteful number, since it uses less digits than its factorization.

1216000000216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540925554 (or 540925550 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1216000000216 its reverse (6120000006121), we get a palindrome (7336000006337).

The spelling of 1216000000216 in words is "one trillion, two hundred sixteen billion, two hundred sixteen", and thus it is an aban number.