212749346671 has 2 divisors, whose sum is σ = 212749346672. Its totient is φ = 212749346670.

The previous prime is 212749346609. The next prime is 212749346683. The reversal of 212749346671 is 176643947212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212749346671 - 2¹¹ = 212749344623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212749343671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106374673335 + 106374673336.

It is an arithmetic number, because the mean of its divisors is an integer number (106374673336).

Almost surely, 2^212749346671 is an apocalyptic number.

212749346671 is a deficient number, since it is larger than the sum of its proper divisors (1).

212749346671 is an equidigital number, since it uses as much as digits as its factorization.

212749346671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3048192, while the sum is 52.

The spelling of 212749346671 in words is "two hundred twelve billion, seven hundred forty-nine million, three hundred forty-six thousand, six hundred seventy-one".