212221293021047 has 2 divisors, whose sum is σ = 212221293021048. Its totient is φ = 212221293021046.

The previous prime is 212221293021037. The next prime is 212221293021071. The reversal of 212221293021047 is 740120392122212.

212221293021047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212221293021047 - 2²⁰ = 212221291972471 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212221293021047.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212221293021037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106110646510523 + 106110646510524.

It is an arithmetic number, because the mean of its divisors is an integer number (106110646510524).

Almost surely, 2^{212221293021047} is an apocalyptic number.

212221293021047 is a deficient number, since it is larger than the sum of its proper divisors (1).

212221293021047 is an equidigital number, since it uses as much as digits as its factorization.

212221293021047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 212221293021047 in words is "two hundred twelve trillion, two hundred twenty-one billion, two hundred ninety-three million, twenty-one thousand, forty-seven".