212123331271 has 2 divisors, whose sum is σ = 212123331272. Its totient is φ = 212123331270.

The previous prime is 212123331269. The next prime is 212123331341. The reversal of 212123331271 is 172133321212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212123331271 - 2¹ = 212123331269 is a prime.

Together with 212123331269, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212123331671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106061665635 + 106061665636.

It is an arithmetic number, because the mean of its divisors is an integer number (106061665636).

Almost surely, 2^212123331271 is an apocalyptic number.

212123331271 is a deficient number, since it is larger than the sum of its proper divisors (1).

212123331271 is an equidigital number, since it uses as much as digits as its factorization.

212123331271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 28.

Adding to 212123331271 its reverse (172133321212), we get a palindrome (384256652483).

The spelling of 212123331271 in words is "two hundred twelve billion, one hundred twenty-three million, three hundred thirty-one thousand, two hundred seventy-one".