212929229 has 2 divisors, whose sum is σ = 212929230. Its totient is φ = 212929228.

The previous prime is 212929201. The next prime is 212929243. The reversal of 212929229 is 922929212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210685225 + 2244004 = 14515^2 + 1498^2 .

It is a cyclic number.

It is not a de Polignac number, because 212929229 - 2⁸ = 212928973 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 212929192 and 212929201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212929529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106464614 + 106464615.

It is an arithmetic number, because the mean of its divisors is an integer number (106464615).

Almost surely, 2^212929229 is an apocalyptic number.

It is an amenable number.

212929229 is a deficient number, since it is larger than the sum of its proper divisors (1).

212929229 is an equidigital number, since it uses as much as digits as its factorization.

212929229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 38.

The square root of 212929229 is about 14592.0947433876. The cubic root of 212929229 is about 597.1431120945.

The spelling of 212929229 in words is "two hundred twelve million, nine hundred twenty-nine thousand, two hundred twenty-nine".