212210111 has 2 divisors, whose sum is σ = 212210112. Its totient is φ = 212210110.

The previous prime is 212210093. The next prime is 212210129. The reversal of 212210111 is 111012212.

It is a balanced prime because it is at equal distance from previous prime (212210093) and next prime (212210129).

It is a cyclic number.

It is not a de Polignac number, because 212210111 - 2¹⁰ = 212209087 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 212210092 and 212210101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212210161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106105055 + 106105056.

It is an arithmetic number, because the mean of its divisors is an integer number (106105056).

Almost surely, 2^212210111 is an apocalyptic number.

212210111 is a deficient number, since it is larger than the sum of its proper divisors (1).

212210111 is an equidigital number, since it uses as much as digits as its factorization.

212210111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 212210111 is about 14567.4332330716. The cubic root of 212210111 is about 596.4701174585.

Adding to 212210111 its reverse (111012212), we get a palindrome (323222323).

The spelling of 212210111 in words is "two hundred twelve million, two hundred ten thousand, one hundred eleven".