212811107 has 2 divisors, whose sum is σ = 212811108. Its totient is φ = 212811106.

The previous prime is 212811091. The next prime is 212811139. The reversal of 212811107 is 701118212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212811107 - 2⁴ = 212811091 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212811707) 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 as a sum of consecutive naturals, namely, 106405553 + 106405554.

It is an arithmetic number, because the mean of its divisors is an integer number (106405554).

Almost surely, 2^212811107 is an apocalyptic number.

212811107 is a deficient number, since it is larger than the sum of its proper divisors (1).

212811107 is an equidigital number, since it uses as much as digits as its factorization.

212811107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 23.

The square root of 212811107 is about 14588.0467164045. The cubic root of 212811107 is about 597.0326704136.

Adding to 212811107 its reverse (701118212), we get a palindrome (913929319).

The spelling of 212811107 in words is "two hundred twelve million, eight hundred eleven thousand, one hundred seven".