216051229 has 2 divisors, whose sum is σ = 216051230. Its totient is φ = 216051228.

The previous prime is 216051217. The next prime is 216051233. The reversal of 216051229 is 922150612.

216051229 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 can be written as a sum of positive squares in only one way, i.e., 144648729 + 71402500 = 12027^2 + 8450^2 .

It is a cyclic number.

It is not a de Polignac number, because 216051229 - 2⁵ = 216051197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 216051197 and 216051206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216051239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108025614 + 108025615.

It is an arithmetic number, because the mean of its divisors is an integer number (108025615).

Almost surely, 2^216051229 is an apocalyptic number.

It is an amenable number.

216051229 is a deficient number, since it is larger than the sum of its proper divisors (1).

216051229 is an equidigital number, since it uses as much as digits as its factorization.

216051229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 216051229 is about 14698.6811993457. The cubic root of 216051229 is about 600.0474305097.

The spelling of 216051229 in words is "two hundred sixteen million, fifty-one thousand, two hundred twenty-nine".