216010251 has 12 divisors (see below), whose sum is σ = 312421512. Its totient is φ = 143819136.

The previous prime is 216010243. The next prime is 216010283. The reversal of 216010251 is 152010612.

It is not a de Polignac number, because 216010251 - 2³ = 216010243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216010451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8166 + ... + 22331.

It is an arithmetic number, because the mean of its divisors is an integer number (26035126).

Almost surely, 2^216010251 is an apocalyptic number.

216010251 is a deficient number, since it is larger than the sum of its proper divisors (96411261).

216010251 is a wasteful number, since it uses less digits than its factorization.

216010251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31290 (or 31287 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 216010251 is about 14697.2871986636. The cubic root of 216010251 is about 600.0094915165.

Adding to 216010251 its reverse (152010612), we get a palindrome (368020863).

The spelling of 216010251 in words is "two hundred sixteen million, ten thousand, two hundred fifty-one".