122212213 has 2 divisors, whose sum is σ = 122212214. Its totient is φ = 122212212.

The previous prime is 122212193. The next prime is 122212247. The reversal of 122212213 is 312212221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119968209 + 2244004 = 10953^2 + 1498^2 .

It is an emirp because it is prime and its reverse (312212221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122212213 - 2¹³ = 122204021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122212273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61106106 + 61106107.

It is an arithmetic number, because the mean of its divisors is an integer number (61106107).

Almost surely, 2^122212213 is an apocalyptic number.

It is an amenable number.

122212213 is a deficient number, since it is larger than the sum of its proper divisors (1).

122212213 is an equidigital number, since it uses as much as digits as its factorization.

122212213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96, while the sum is 16.

The square root of 122212213 is about 11054.9632744754. The cubic root of 122212213 is about 496.2549702036.

Adding to 122212213 its reverse (312212221), we get a palindrome (434424434).

The spelling of 122212213 in words is "one hundred twenty-two million, two hundred twelve thousand, two hundred thirteen".