213100211 has 4 divisors (see below), whose sum is σ = 213137712. Its totient is φ = 213062712.

The previous prime is 213100201. The next prime is 213100243. The reversal of 213100211 is 112001312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213100211 - 2²⁶ = 145991347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213100192 and 213100201.

It is not an unprimeable number, because it can be changed into a prime (213100201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8276 + ... + 22241.

It is an arithmetic number, because the mean of its divisors is an integer number (53284428).

Almost surely, 2^213100211 is an apocalyptic number.

213100211 is a deficient number, since it is larger than the sum of its proper divisors (37501).

213100211 is an equidigital number, since it uses as much as digits as its factorization.

213100211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37500.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 213100211 is about 14597.9522879067. The cubic root of 213100211 is about 597.3029044777.

Adding to 213100211 its reverse (112001312), we get a palindrome (325101523).

The spelling of 213100211 in words is "two hundred thirteen million, one hundred thousand, two hundred eleven".