211530110 has 32 divisors (see below), whose sum is σ = 426602592. Its totient is φ = 74839680.

The previous prime is 211530083. The next prime is 211530113. The reversal of 211530110 is 11035112.

It is a super-2 number, since 2×211530110² = 89489974873224200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211530113) 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 in 15 ways as a sum of consecutive naturals, for example, 21917 + ... + 30056.

It is an arithmetic number, because the mean of its divisors is an integer number (13331331).

Almost surely, 2^211530110 is an apocalyptic number.

211530110 is an abundant number, since it is smaller than the sum of its proper divisors (215072482).

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

211530110 is a wasteful number, since it uses less digits than its factorization.

211530110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52028.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 211530110 is about 14544.0747385318. The cubic root of 211530110 is about 595.8323308811.

Adding to 211530110 its reverse (11035112), we get a palindrome (222565222).

The spelling of 211530110 in words is "two hundred eleven million, five hundred thirty thousand, one hundred ten".