120121601 has 2 divisors, whose sum is σ = 120121602. Its totient is φ = 120121600.

The previous prime is 120121537. The next prime is 120121637. The reversal of 120121601 is 106121021.

It is a Cunningham number, because it is equal to 10960²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120121600 + 1 = 10960^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 120121601 - 2⁶ = 120121537 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (120121301) 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, 60060800 + 60060801.

It is an arithmetic number, because the mean of its divisors is an integer number (60060801).

Almost surely, 2^120121601 is an apocalyptic number.

It is an amenable number.

120121601 is a deficient number, since it is larger than the sum of its proper divisors (1).

120121601 is an equidigital number, since it uses as much as digits as its factorization.

120121601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 120121601 is about 10960.0000456204. Note that the first 4 decimals coincide. The cubic root of 120121601 is about 493.4089663178.

Adding to 120121601 its reverse (106121021), we get a palindrome (226242622).

The spelling of 120121601 in words is "one hundred twenty million, one hundred twenty-one thousand, six hundred one".