212105304529 has 2 divisors, whose sum is σ = 212105304530. Its totient is φ = 212105304528.

The previous prime is 212105304527. The next prime is 212105304553. The reversal of 212105304529 is 925403501212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186841791504 + 25263513025 = 432252^2 + 158945^2 .

It is a cyclic number.

It is not a de Polignac number, because 212105304529 - 2¹ = 212105304527 is a prime.

Together with 212105304527, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 212105304494 and 212105304503.

It is not a weakly prime, because it can be changed into another prime (212105304527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106052652264 + 106052652265.

It is an arithmetic number, because the mean of its divisors is an integer number (106052652265).

Almost surely, 2^212105304529 is an apocalyptic number.

It is an amenable number.

212105304529 is a deficient number, since it is larger than the sum of its proper divisors (1).

212105304529 is an equidigital number, since it uses as much as digits as its factorization.

212105304529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 212105304529 in words is "two hundred twelve billion, one hundred five million, three hundred four thousand, five hundred twenty-nine".