216011214 has 24 divisors (see below), whose sum is σ = 495555840. Its totient is φ = 67768128.

The previous prime is 216011203. The next prime is 216011221. The reversal of 216011214 is 412110612.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 352654 + ... + 353265.

It is an arithmetic number, because the mean of its divisors is an integer number (20648160).

Almost surely, 2^216011214 is an apocalyptic number.

216011214 is an abundant number, since it is smaller than the sum of its proper divisors (279544626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216011214 is a wasteful number, since it uses less digits than its factorization.

216011214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705944 (or 705941 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 216011214 is about 14697.3199597750. The cubic root of 216011214 is about 600.0103831536.

Adding to 216011214 its reverse (412110612), we get a palindrome (628121826).

It can be divided in two parts, 216011 and 214, that added together give a square (216225 = 465²).

The spelling of 216011214 in words is "two hundred sixteen million, eleven thousand, two hundred fourteen".