213112111 has 8 divisors (see below), whose sum is σ = 214220160. Its totient is φ = 212007768.

The previous prime is 213112103. The next prime is 213112117. The reversal of 213112111 is 111211312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213112111 - 2³ = 213112103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213112091 and 213112100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213112117) 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 7 ways as a sum of consecutive naturals, for example, 257280 + ... + 258106.

It is an arithmetic number, because the mean of its divisors is an integer number (26777520).

Almost surely, 2^213112111 is an apocalyptic number.

213112111 is a deficient number, since it is larger than the sum of its proper divisors (1108049).

213112111 is an equidigital number, since it uses as much as digits as its factorization.

213112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853.

The product of its digits is 12, while the sum is 13.

The square root of 213112111 is about 14598.3598736296. The cubic root of 213112111 is about 597.3140225212.

Adding to 213112111 its reverse (111211312), we get a palindrome (324323423).

The spelling of 213112111 in words is "two hundred thirteen million, one hundred twelve thousand, one hundred eleven".