122020417 has 2 divisors, whose sum is σ = 122020418. Its totient is φ = 122020416.

The previous prime is 122020397. The next prime is 122020427. The reversal of 122020417 is 714020221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114832656 + 7187761 = 10716^2 + 2681^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122020417 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 122020394 and 122020403.

It is not a weakly prime, because it can be changed into another prime (122020427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61010208 + 61010209.

It is an arithmetic number, because the mean of its divisors is an integer number (61010209).

Almost surely, 2^122020417 is an apocalyptic number.

It is an amenable number.

122020417 is a deficient number, since it is larger than the sum of its proper divisors (1).

122020417 is an equidigital number, since it uses as much as digits as its factorization.

122020417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 122020417 is about 11046.2852126858. The cubic root of 122020417 is about 495.9952319716.

Adding to 122020417 its reverse (714020221), we get a palindrome (836040638).

It can be divided in two parts, 1220204 and 17, that added together give a palindrome (1220221).

The spelling of 122020417 in words is "one hundred twenty-two million, twenty thousand, four hundred seventeen".