212210129 has 2 divisors, whose sum is σ = 212210130. Its totient is φ = 212210128.

The previous prime is 212210111. The next prime is 212210143. The reversal of 212210129 is 921012212.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203347600 + 8862529 = 14260^2 + 2977^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212210129 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 212210129.

It is not a weakly prime, because it can be changed into another prime (212210329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106105064 + 106105065.

It is an arithmetic number, because the mean of its divisors is an integer number (106105065).

Almost surely, 2^212210129 is an apocalyptic number.

It is an amenable number.

212210129 is a deficient number, since it is larger than the sum of its proper divisors (1).

212210129 is an equidigital number, since it uses as much as digits as its factorization.

212210129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 212210129 is about 14567.4338508881. The cubic root of 212210129 is about 596.4701343231.

The spelling of 212210129 in words is "two hundred twelve million, two hundred ten thousand, one hundred twenty-nine".