216750721214 has 4 divisors (see below), whose sum is σ = 325126081824. Its totient is φ = 108375360606.

The previous prime is 216750721207. The next prime is 216750721217. The reversal of 216750721214 is 412127057612.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216750721217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54187680302 + ... + 54187680305.

It is an arithmetic number, because the mean of its divisors is an integer number (81281520456).

Almost surely, 2^216750721214 is an apocalyptic number.

216750721214 is a deficient number, since it is larger than the sum of its proper divisors (108375360610).

216750721214 is a wasteful number, since it uses less digits than its factorization.

216750721214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108375360609.

The product of its (nonzero) digits is 47040, while the sum is 38.

Adding to 216750721214 its reverse (412127057612), we get a palindrome (628877778826).

The spelling of 216750721214 in words is "two hundred sixteen billion, seven hundred fifty million, seven hundred twenty-one thousand, two hundred fourteen".