211330 has 16 divisors (see below), whose sum is σ = 434880. Its totient is φ = 72432.

The previous prime is 211319. The next prime is 211333. The reversal of 211330 is 33112.

211330 = 73² + 74² + ... + 100².

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (211333) by changing a digit.

211330 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1440 + ... + 1579.

It is an arithmetic number, because the mean of its divisors is an integer number (27180).

2²¹¹³³⁰ is an apocalyptic number.

211330 is an abundant number, since it is smaller than the sum of its proper divisors (223550).

It is a weird number, because it is abundant, but not a pseudoperfect number.

211330 is a wasteful number, since it uses less digits than its factorization.

211330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3033.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 211330 is about 459.7064280603. The cubic root of 211330 is about 59.5644383445.

Adding to 211330 its reverse (33112), we get a palindrome (244442).

The spelling of 211330 in words is "two hundred eleven thousand, three hundred thirty".