212004787171 has 2 divisors, whose sum is σ = 212004787172. Its totient is φ = 212004787170.

The previous prime is 212004787133. The next prime is 212004787219. The reversal of 212004787171 is 171787400212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212004787171 - 2²³ = 211996398563 is a prime.

It is not a weakly prime, because it can be changed into another prime (212004727171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106002393585 + 106002393586.

It is an arithmetic number, because the mean of its divisors is an integer number (106002393586).

Almost surely, 2^212004787171 is an apocalyptic number.

212004787171 is a deficient number, since it is larger than the sum of its proper divisors (1).

212004787171 is an equidigital number, since it uses as much as digits as its factorization.

212004787171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43904, while the sum is 40.

The spelling of 212004787171 in words is "two hundred twelve billion, four million, seven hundred eighty-seven thousand, one hundred seventy-one".