212124229 has 2 divisors, whose sum is σ = 212124230. Its totient is φ = 212124228.

The previous prime is 212124191. The next prime is 212124247. The reversal of 212124229 is 922421212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163891204 + 48233025 = 12802^2 + 6945^2 .

It is a cyclic number.

It is not a de Polignac number, because 212124229 - 2¹⁷ = 211993157 is a prime.

It is equal to p_11712319 and since 212124229 and 11712319 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 (212124259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106062114 + 106062115.

It is an arithmetic number, because the mean of its divisors is an integer number (106062115).

Almost surely, 2^212124229 is an apocalyptic number.

It is an amenable number.

212124229 is a deficient number, since it is larger than the sum of its proper divisors (1).

212124229 is an equidigital number, since it uses as much as digits as its factorization.

212124229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 25.

The square root of 212124229 is about 14564.4851951588. The cubic root of 212124229 is about 596.3896422503.

The spelling of 212124229 in words is "two hundred twelve million, one hundred twenty-four thousand, two hundred twenty-nine".