122240213 has 2 divisors, whose sum is σ = 122240214. Its totient is φ = 122240212.

The previous prime is 122240201. The next prime is 122240221. The reversal of 122240213 is 312042221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115068529 + 7171684 = 10727^2 + 2678^2 .

It is a cyclic number.

It is not a de Polignac number, because 122240213 - 2⁴ = 122240197 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 122240191 and 122240200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122240233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61120106 + 61120107.

It is an arithmetic number, because the mean of its divisors is an integer number (61120107).

Almost surely, 2^122240213 is an apocalyptic number.

It is an amenable number.

122240213 is a deficient number, since it is larger than the sum of its proper divisors (1).

122240213 is an equidigital number, since it uses as much as digits as its factorization.

122240213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 122240213 is about 11056.2296014509. The cubic root of 122240213 is about 496.2928662474.

Adding to 122240213 its reverse (312042221), we get a palindrome (434282434).

The spelling of 122240213 in words is "one hundred twenty-two million, two hundred forty thousand, two hundred thirteen".