12210220993 has 2 divisors, whose sum is σ = 12210220994. Its totient is φ = 12210220992.

The previous prime is 12210220991. The next prime is 12210221011. The reversal of 12210220993 is 39902201221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11830477824 + 379743169 = 108768^2 + 19487^2 .

It is an emirp because it is prime and its reverse (39902201221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12210220993 - 2¹ = 12210220991 is a prime.

Together with 12210220991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12210220991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105110496 + 6105110497.

It is an arithmetic number, because the mean of its divisors is an integer number (6105110497).

Almost surely, 2^12210220993 is an apocalyptic number.

It is an amenable number.

12210220993 is a deficient number, since it is larger than the sum of its proper divisors (1).

12210220993 is an equidigital number, since it uses as much as digits as its factorization.

12210220993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The spelling of 12210220993 in words is "twelve billion, two hundred ten million, two hundred twenty thousand, nine hundred ninety-three".