211212121067 has 2 divisors, whose sum is σ = 211212121068. Its totient is φ = 211212121066.

The previous prime is 211212120991. The next prime is 211212121073. The reversal of 211212121067 is 760121212112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211212121067 - 2¹⁴ = 211212104683 is a prime.

It is a super-2 number, since 2×211212121067² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211212121867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105606060533 + 105606060534.

It is an arithmetic number, because the mean of its divisors is an integer number (105606060534).

Almost surely, 2^211212121067 is an apocalyptic number.

211212121067 is a deficient number, since it is larger than the sum of its proper divisors (1).

211212121067 is an equidigital number, since it uses as much as digits as its factorization.

211212121067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 26.

Adding to 211212121067 its reverse (760121212112), we get a palindrome (971333333179).

The spelling of 211212121067 in words is "two hundred eleven billion, two hundred twelve million, one hundred twenty-one thousand, sixty-seven".