212020986647 has 2 divisors, whose sum is σ = 212020986648. Its totient is φ = 212020986646.

The previous prime is 212020986607. The next prime is 212020986659. The reversal of 212020986647 is 746689020212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212020986647 - 2⁸ = 212020986391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212020986607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010493323 + 106010493324.

It is an arithmetic number, because the mean of its divisors is an integer number (106010493324).

Almost surely, 2^212020986647 is an apocalyptic number.

212020986647 is a deficient number, since it is larger than the sum of its proper divisors (1).

212020986647 is an equidigital number, since it uses as much as digits as its factorization.

212020986647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 212020986647 in words is "two hundred twelve billion, twenty million, nine hundred eighty-six thousand, six hundred forty-seven".