216133371 has 12 divisors (see below), whose sum is σ = 313939080. Its totient is φ = 143282880.

The previous prime is 216133361. The next prime is 216133381. The reversal of 216133371 is 173331612.

It is an interprime number because it is at equal distance from previous prime (216133361) and next prime (216133381).

It is not a de Polignac number, because 216133371 - 2⁹ = 216132859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216133321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65470 + ... + 68691.

It is an arithmetic number, because the mean of its divisors is an integer number (26161590).

Almost surely, 2^216133371 is an apocalyptic number.

216133371 is a deficient number, since it is larger than the sum of its proper divisors (97805709).

216133371 is a wasteful number, since it uses less digits than its factorization.

216133371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134346 (or 134343 counting only the distinct ones).

The product of its digits is 2268, while the sum is 27.

The square root of 216133371 is about 14701.4751300677. The cubic root of 216133371 is about 600.1234662584.

Adding to 216133371 its reverse (173331612), we get a palindrome (389464983).

The spelling of 216133371 in words is "two hundred sixteen million, one hundred thirty-three thousand, three hundred seventy-one".