212012210129 has 2 divisors, whose sum is σ = 212012210130. Its totient is φ = 212012210128.

The previous prime is 212012210077. The next prime is 212012210141. The reversal of 212012210129 is 921012210212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184779619600 + 27232590529 = 429860^2 + 165023^2 .

It is a cyclic number.

It is not a de Polignac number, because 212012210129 - 2¹² = 212012206033 is a prime.

It is not a weakly prime, because it can be changed into another prime (212012210149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106006105064 + 106006105065.

It is an arithmetic number, because the mean of its divisors is an integer number (106006105065).

Almost surely, 2^212012210129 is an apocalyptic number.

It is an amenable number.

212012210129 is a deficient number, since it is larger than the sum of its proper divisors (1).

212012210129 is an equidigital number, since it uses as much as digits as its factorization.

212012210129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 212012210129 in words is "two hundred twelve billion, twelve million, two hundred ten thousand, one hundred twenty-nine".