2212006623221 has 2 divisors, whose sum is σ = 2212006623222. Its totient is φ = 2212006623220.

The previous prime is 2212006623187. The next prime is 2212006623223. The reversal of 2212006623221 is 1223266002122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1938529920721 + 273476702500 = 1392311^2 + 522950^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212006623221 - 2¹⁰ = 2212006622197 is a prime.

Together with 2212006623223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2212006623223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106003311610 + 1106003311611.

It is an arithmetic number, because the mean of its divisors is an integer number (1106003311611).

Almost surely, 2^{2212006623221} is an apocalyptic number.

It is an amenable number.

2212006623221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2212006623221 is an equidigital number, since it uses as much as digits as its factorization.

2212006623221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

The spelling of 2212006623221 in words is "two trillion, two hundred twelve billion, six million, six hundred twenty-three thousand, two hundred twenty-one".