212221067 has 2 divisors, whose sum is σ = 212221068. Its totient is φ = 212221066.

The previous prime is 212221049. The next prime is 212221153. The reversal of 212221067 is 760122212.

It is a happy number.

212221067 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212221067 - 2¹² = 212216971 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212221007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106110533 + 106110534.

It is an arithmetic number, because the mean of its divisors is an integer number (106110534).

Almost surely, 2^212221067 is an apocalyptic number.

212221067 is a deficient number, since it is larger than the sum of its proper divisors (1).

212221067 is an equidigital number, since it uses as much as digits as its factorization.

212221067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 212221067 is about 14567.8092725022. The cubic root of 212221067 is about 596.4803821503.

Adding to 212221067 its reverse (760122212), we get a palindrome (972343279).

The spelling of 212221067 in words is "two hundred twelve million, two hundred twenty-one thousand, sixty-seven".