212022229 has 2 divisors, whose sum is σ = 212022230. Its totient is φ = 212022228.

The previous prime is 212022227. The next prime is 212022241. The reversal of 212022229 is 922220212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141848100 + 70174129 = 11910^2 + 8377^2 .

It is a cyclic number.

It is not a de Polignac number, because 212022229 - 2¹ = 212022227 is a prime.

Together with 212022227, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_11707024 and since 212022229 and 11707024 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212022227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106011114 + 106011115.

It is an arithmetic number, because the mean of its divisors is an integer number (106011115).

Almost surely, 2^212022229 is an apocalyptic number.

It is an amenable number.

212022229 is a deficient number, since it is larger than the sum of its proper divisors (1).

212022229 is an equidigital number, since it uses as much as digits as its factorization.

212022229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 212022229 is about 14560.9831055461. The cubic root of 212022229 is about 596.2940355442.

The spelling of 212022229 in words is "two hundred twelve million, twenty-two thousand, two hundred twenty-nine".