122521417 has 2 divisors, whose sum is σ = 122521418. Its totient is φ = 122521416.

The previous prime is 122521403. The next prime is 122521439. The reversal of 122521417 is 714125221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118722816 + 3798601 = 10896^2 + 1949^2 .

It is an emirp because it is prime and its reverse (714125221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122521417 is a prime.

It is a super-2 number, since 2×122521417² = 30022995247375778, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122521391 and 122521400.

It is not a weakly prime, because it can be changed into another prime (122521447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61260708 + 61260709.

It is an arithmetic number, because the mean of its divisors is an integer number (61260709).

Almost surely, 2^122521417 is an apocalyptic number.

It is an amenable number.

122521417 is a deficient number, since it is larger than the sum of its proper divisors (1).

122521417 is an equidigital number, since it uses as much as digits as its factorization.

122521417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1120, while the sum is 25.

The square root of 122521417 is about 11068.9392897423. The cubic root of 122521417 is about 496.6731357104.

Adding to 122521417 its reverse (714125221), we get a palindrome (836646638).

The spelling of 122521417 in words is "one hundred twenty-two million, five hundred twenty-one thousand, four hundred seventeen".