212011100129 has 2 divisors, whose sum is σ = 212011100130. Its totient is φ = 212011100128.

The previous prime is 212011100117. The next prime is 212011100131. The reversal of 212011100129 is 921001110212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205734816400 + 6276283729 = 453580^2 + 79223^2 .

It is a cyclic number.

It is not a de Polignac number, because 212011100129 - 2⁴ = 212011100113 is a prime.

Together with 212011100131, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212011100129.

It is not a weakly prime, because it can be changed into another prime (212011120129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106005550064 + 106005550065.

It is an arithmetic number, because the mean of its divisors is an integer number (106005550065).

Almost surely, 2^212011100129 is an apocalyptic number.

It is an amenable number.

212011100129 is a deficient number, since it is larger than the sum of its proper divisors (1).

212011100129 is an equidigital number, since it uses as much as digits as its factorization.

212011100129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 212011100129 in words is "two hundred twelve billion, eleven million, one hundred thousand, one hundred twenty-nine".