122212220989 has 2 divisors, whose sum is σ = 122212220990. Its totient is φ = 122212220988.

The previous prime is 122212220969. The next prime is 122212221049. The reversal of 122212220989 is 989022212221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121609125625 + 603095364 = 348725^2 + 24558^2 .

It is a cyclic number.

It is not a de Polignac number, because 122212220989 - 2¹³ = 122212212797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122212220969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61106110494 + 61106110495.

It is an arithmetic number, because the mean of its divisors is an integer number (61106110495).

Almost surely, 2^122212220989 is an apocalyptic number.

It is an amenable number.

122212220989 is a deficient number, since it is larger than the sum of its proper divisors (1).

122212220989 is an equidigital number, since it uses as much as digits as its factorization.

122212220989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 40.

The spelling of 122212220989 in words is "one hundred twenty-two billion, two hundred twelve million, two hundred twenty thousand, nine hundred eighty-nine".