212212022171 has 2 divisors, whose sum is σ = 212212022172. Its totient is φ = 212212022170.

The previous prime is 212212022147. The next prime is 212212022233. The reversal of 212212022171 is 171220212212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212212022171 is a prime.

It is not a weakly prime, because it can be changed into another prime (212211022171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106106011085 + 106106011086.

It is an arithmetic number, because the mean of its divisors is an integer number (106106011086).

Almost surely, 2^212212022171 is an apocalyptic number.

212212022171 is a deficient number, since it is larger than the sum of its proper divisors (1).

212212022171 is an equidigital number, since it uses as much as digits as its factorization.

212212022171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 23.

Adding to 212212022171 its reverse (171220212212), we get a palindrome (383432234383).

The spelling of 212212022171 in words is "two hundred twelve billion, two hundred twelve million, twenty-two thousand, one hundred seventy-one".