216224051 has 2 divisors, whose sum is σ = 216224052. Its totient is φ = 216224050.

The previous prime is 216223981. The next prime is 216224059. The reversal of 216224051 is 150422612.

It is a happy number.

216224051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216224051 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (216224059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108112025 + 108112026.

It is an arithmetic number, because the mean of its divisors is an integer number (108112026).

Almost surely, 2^216224051 is an apocalyptic number.

216224051 is a deficient number, since it is larger than the sum of its proper divisors (1).

216224051 is an equidigital number, since it uses as much as digits as its factorization.

216224051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 216224051 is about 14704.5588509142. The cubic root of 216224051 is about 600.2073829419.

Adding to 216224051 its reverse (150422612), we get a palindrome (366646663).

The spelling of 216224051 in words is "two hundred sixteen million, two hundred twenty-four thousand, fifty-one".