212120210047 has 2 divisors, whose sum is σ = 212120210048. Its totient is φ = 212120210046.

The previous prime is 212120210017. The next prime is 212120210131. The reversal of 212120210047 is 740012021212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212120210047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212120210017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106060105023 + 106060105024.

It is an arithmetic number, because the mean of its divisors is an integer number (106060105024).

Almost surely, 2^212120210047 is an apocalyptic number.

212120210047 is a deficient number, since it is larger than the sum of its proper divisors (1).

212120210047 is an equidigital number, since it uses as much as digits as its factorization.

212120210047 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 22.

Adding to 212120210047 its reverse (740012021212), we get a palindrome (952132231259).

The spelling of 212120210047 in words is "two hundred twelve billion, one hundred twenty million, two hundred ten thousand, forty-seven".