216133 has 2 divisors, whose sum is σ = 216134. Its totient is φ = 216132.

The previous prime is 216127. The next prime is 216149. The reversal of 216133 is 331612.

It is an a-pointer prime, because the next prime (216149) can be obtained adding 216133 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214369 + 1764 = 463^2 + 42^2 .

It is a cyclic number.

It is not a de Polignac number, because 216133 - 2¹³ = 207941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108066 + 108067.

It is an arithmetic number, because the mean of its divisors is an integer number (108067).

2²¹⁶¹³³ is an apocalyptic number.

216133 is the 249-th centered heptagonal number.

It is an amenable number.

216133 is a deficient number, since it is larger than the sum of its proper divisors (1).

216133 is an equidigital number, since it uses as much as digits as its factorization.

216133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108, while the sum is 16.

The square root of 216133 is about 464.9010647439. The cubic root of 216133 is about 60.0123122881.

Adding to 216133 its reverse (331612), we get a palindrome (547745).

The spelling of 216133 in words is "two hundred sixteen thousand, one hundred thirty-three".