212311129 has 2 divisors, whose sum is σ = 212311130. Its totient is φ = 212311128.

The previous prime is 212311103. The next prime is 212311139. The reversal of 212311129 is 921113212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200165904 + 12145225 = 14148^2 + 3485^2 .

It is a cyclic number.

It is not a de Polignac number, because 212311129 - 2²¹ = 210213977 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212311139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106155564 + 106155565.

It is an arithmetic number, because the mean of its divisors is an integer number (106155565).

Almost surely, 2^212311129 is an apocalyptic number.

It is an amenable number.

212311129 is a deficient number, since it is larger than the sum of its proper divisors (1).

212311129 is an equidigital number, since it uses as much as digits as its factorization.

212311129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 22.

The square root of 212311129 is about 14570.9000751498. The cubic root of 212311129 is about 596.5647479793.

The spelling of 212311129 in words is "two hundred twelve million, three hundred eleven thousand, one hundred twenty-nine".