122102401 has 2 divisors, whose sum is σ = 122102402. Its totient is φ = 122102400.

The previous prime is 122102389. The next prime is 122102437. The reversal of 122102401 is 104201221.

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., 115347600 + 6754801 = 10740^2 + 2599^2 .

It is an emirp because it is prime and its reverse (104201221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122102401 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (122132401) 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, 61051200 + 61051201.

It is an arithmetic number, because the mean of its divisors is an integer number (61051201).

Almost surely, 2^122102401 is an apocalyptic number.

It is an amenable number.

122102401 is a deficient number, since it is larger than the sum of its proper divisors (1).

122102401 is an equidigital number, since it uses as much as digits as its factorization.

122102401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 122102401 is about 11049.9955203611. The cubic root of 122102401 is about 496.1062914439.

Adding to 122102401 its reverse (104201221), we get a palindrome (226303622).

The spelling of 122102401 in words is "one hundred twenty-two million, one hundred two thousand, four hundred one".