212323229 has 2 divisors, whose sum is σ = 212323230. Its totient is φ = 212323228.

The previous prime is 212323219. The next prime is 212323259. The reversal of 212323229 is 922323212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172922500 + 39400729 = 13150^2 + 6277^2 .

It is a cyclic number.

It is not a de Polignac number, because 212323229 - 2¹⁶ = 212257693 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 212323198 and 212323207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212323219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106161614 + 106161615.

It is an arithmetic number, because the mean of its divisors is an integer number (106161615).

Almost surely, 2^212323229 is an apocalyptic number.

It is an amenable number.

212323229 is a deficient number, since it is larger than the sum of its proper divisors (1).

212323229 is an equidigital number, since it uses as much as digits as its factorization.

212323229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 26.

The square root of 212323229 is about 14571.3152803719. The cubic root of 212323229 is about 596.5760808698.

It can be divided in two parts, 2123 and 23229, that added together give a palindrome (25352).

The spelling of 212323229 in words is "two hundred twelve million, three hundred twenty-three thousand, two hundred twenty-nine".