212120010221047 has 2 divisors, whose sum is σ = 212120010221048. Its totient is φ = 212120010221046.

The previous prime is 212120010220999. The next prime is 212120010221089. The reversal of 212120010221047 is 740122010021212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212120010221047 - 2¹⁹ = 212120009696759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212120010225047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106060005110523 + 106060005110524.

It is an arithmetic number, because the mean of its divisors is an integer number (106060005110524).

Almost surely, 2^{212120010221047} is an apocalyptic number.

212120010221047 is a deficient number, since it is larger than the sum of its proper divisors (1).

212120010221047 is an equidigital number, since it uses as much as digits as its factorization.

212120010221047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 25.

Adding to 212120010221047 its reverse (740122010021212), we get a palindrome (952242020242259).

The spelling of 212120010221047 in words is "two hundred twelve trillion, one hundred twenty billion, ten million, two hundred twenty-one thousand, forty-seven".