212021222212211 has 2 divisors, whose sum is σ = 212021222212212. Its totient is φ = 212021222212210.

The previous prime is 212021222212183. The next prime is 212021222212231. The reversal of 212021222212211 is 112212222120212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212021222212211 is a prime.

It is not a weakly prime, because it can be changed into another prime (212021222212231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010611106105 + 106010611106106.

It is an arithmetic number, because the mean of its divisors is an integer number (106010611106106).

Almost surely, 2^{212021222212211} is an apocalyptic number.

212021222212211 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021222212211 is an equidigital number, since it uses as much as digits as its factorization.

212021222212211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 212021222212211 its reverse (112212222120212), we get a palindrome (324233444332423).

The spelling of 212021222212211 in words is "two hundred twelve trillion, twenty-one billion, two hundred twenty-two million, two hundred twelve thousand, two hundred eleven".