16216129 has 2 divisors, whose sum is σ = 16216130. Its totient is φ = 16216128.

The previous prime is 16216121. The next prime is 16216141. The reversal of 16216129 is 92161261.

16216129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10575504 + 5640625 = 3252^2 + 2375^2 .

It is a cyclic number.

It is not a de Polignac number, because 16216129 - 2³ = 16216121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16216097 and 16216106.

It is not a weakly prime, because it can be changed into another prime (16216121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8108064 + 8108065.

It is an arithmetic number, because the mean of its divisors is an integer number (8108065).

Almost surely, 2^16216129 is an apocalyptic number.

It is an amenable number.

16216129 is a deficient number, since it is larger than the sum of its proper divisors (1).

16216129 is an equidigital number, since it uses as much as digits as its factorization.

16216129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 28.

The square root of 16216129 is about 4026.9255021666. The cubic root of 16216129 is about 253.1137453513.

It can be divided in two parts, 1621 and 6129, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 16216129 in words is "sixteen million, two hundred sixteen thousand, one hundred twenty-nine".