212204429 has 2 divisors, whose sum is σ = 212204430. Its totient is φ = 212204428.

The previous prime is 212204413. The next prime is 212204449. The reversal of 212204429 is 924402212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202407529 + 9796900 = 14227^2 + 3130^2 .

It is a cyclic number.

It is not a de Polignac number, because 212204429 - 2⁴ = 212204413 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 212204398 and 212204407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212204449) 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, 106102214 + 106102215.

It is an arithmetic number, because the mean of its divisors is an integer number (106102215).

Almost surely, 2^212204429 is an apocalyptic number.

It is an amenable number.

212204429 is a deficient number, since it is larger than the sum of its proper divisors (1).

212204429 is an equidigital number, since it uses as much as digits as its factorization.

212204429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 212204429 is about 14567.2382077043. The cubic root of 212204429 is about 596.4647938456.

The spelling of 212204429 in words is "two hundred twelve million, two hundred four thousand, four hundred twenty-nine".