216293101 has 2 divisors, whose sum is σ = 216293102. Its totient is φ = 216293100.

The previous prime is 216293069. The next prime is 216293113. The reversal of 216293101 is 101392612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180902500 + 35390601 = 13450^2 + 5949^2 .

It is a cyclic number.

It is not a de Polignac number, because 216293101 - 2⁵ = 216293069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216293141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108146550 + 108146551.

It is an arithmetic number, because the mean of its divisors is an integer number (108146551).

Almost surely, 2^216293101 is an apocalyptic number.

It is an amenable number.

216293101 is a deficient number, since it is larger than the sum of its proper divisors (1).

216293101 is an equidigital number, since it uses as much as digits as its factorization.

216293101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 216293101 is about 14706.9065748036. The cubic root of 216293101 is about 600.2712671532.

The spelling of 216293101 in words is "two hundred sixteen million, two hundred ninety-three thousand, one hundred one".