210111213 has 32 divisors (see below), whose sum is σ = 309657600. Its totient is φ = 125931456.

The previous prime is 210111203. The next prime is 210111227. The reversal of 210111213 is 312111012.

It is not a de Polignac number, because 210111213 - 2¹⁸ = 209849069 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210111203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 291868 + ... + 292586.

It is an arithmetic number, because the mean of its divisors is an integer number (9676800).

Almost surely, 2^210111213 is an apocalyptic number.

It is an amenable number.

210111213 is a deficient number, since it is larger than the sum of its proper divisors (99546387).

210111213 is a wasteful number, since it uses less digits than its factorization.

210111213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 210111213 is about 14495.2134513432. The cubic root of 210111213 is about 594.4971039642.

Adding to 210111213 its reverse (312111012), we get a palindrome (522222225).

The spelling of 210111213 in words is "two hundred ten million, one hundred eleven thousand, two hundred thirteen".