122110217 has 2 divisors, whose sum is σ = 122110218. Its totient is φ = 122110216.

The previous prime is 122110211. The next prime is 122110267. The reversal of 122110217 is 712011221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108597241 + 13512976 = 10421^2 + 3676^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122110217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122110195 and 122110204.

It is not a weakly prime, because it can be changed into another prime (122110211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61055108 + 61055109.

It is an arithmetic number, because the mean of its divisors is an integer number (61055109).

Almost surely, 2^122110217 is an apocalyptic number.

It is an amenable number.

122110217 is a deficient number, since it is larger than the sum of its proper divisors (1).

122110217 is an equidigital number, since it uses as much as digits as its factorization.

122110217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 122110217 is about 11050.3491800033. The cubic root of 122110217 is about 496.1168767777.

Adding to 122110217 its reverse (712011221), we get a palindrome (834121438).

The spelling of 122110217 in words is "one hundred twenty-two million, one hundred ten thousand, two hundred seventeen".