212120221067 has 2 divisors, whose sum is σ = 212120221068. Its totient is φ = 212120221066.

The previous prime is 212120221009. The next prime is 212120221121. The reversal of 212120221067 is 760122021212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212120221067 - 2⁸ = 212120220811 is a prime.

It is not a weakly prime, because it can be changed into another prime (212120226067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106060110533 + 106060110534.

It is an arithmetic number, because the mean of its divisors is an integer number (106060110534).

Almost surely, 2^212120221067 is an apocalyptic number.

212120221067 is a deficient number, since it is larger than the sum of its proper divisors (1).

212120221067 is an equidigital number, since it uses as much as digits as its factorization.

212120221067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 26.

Adding to 212120221067 its reverse (760122021212), we get a palindrome (972242242279).

The spelling of 212120221067 in words is "two hundred twelve billion, one hundred twenty million, two hundred twenty-one thousand, sixty-seven".