216114251 has 4 divisors (see below), whose sum is σ = 228826872. Its totient is φ = 203401632.

The previous prime is 216114209. The next prime is 216114253. The reversal of 216114251 is 152411612.

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

It is a cyclic number.

It is not a de Polignac number, because 216114251 - 2¹⁴ = 216097867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216114253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6356285 + ... + 6356318.

It is an arithmetic number, because the mean of its divisors is an integer number (57206718).

Almost surely, 2^216114251 is an apocalyptic number.

216114251 is a deficient number, since it is larger than the sum of its proper divisors (12712621).

216114251 is a wasteful number, since it uses less digits than its factorization.

216114251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12712620.

The product of its digits is 480, while the sum is 23.

The square root of 216114251 is about 14700.8248408040. The cubic root of 216114251 is about 600.1057693166.

Adding to 216114251 its reverse (152411612), we get a palindrome (368525863).

The spelling of 216114251 in words is "two hundred sixteen million, one hundred fourteen thousand, two hundred fifty-one".