212212221079 has 2 divisors, whose sum is σ = 212212221080. Its totient is φ = 212212221078.

The previous prime is 212212221047. The next prime is 212212221203. The reversal of 212212221079 is 970122212212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212212221079 - 2⁵ = 212212221047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212212221079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212212221019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106106110539 + 106106110540.

It is an arithmetic number, because the mean of its divisors is an integer number (106106110540).

Almost surely, 2^212212221079 is an apocalyptic number.

212212221079 is a deficient number, since it is larger than the sum of its proper divisors (1).

212212221079 is an equidigital number, since it uses as much as digits as its factorization.

212212221079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The spelling of 212212221079 in words is "two hundred twelve billion, two hundred twelve million, two hundred twenty-one thousand, seventy-nine".