121560601 has 2 divisors, whose sum is σ = 121560602. Its totient is φ = 121560600.

The previous prime is 121560583. The next prime is 121560653. The reversal of 121560601 is 106065121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110271001 + 11289600 = 10501^2 + 3360^2 .

It is a cyclic number.

It is not a de Polignac number, because 121560601 - 2²⁵ = 88006169 is a prime.

It is not a weakly prime, because it can be changed into another prime (121560661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60780300 + 60780301.

It is an arithmetic number, because the mean of its divisors is an integer number (60780301).

Almost surely, 2^121560601 is an apocalyptic number.

It is an amenable number.

121560601 is a deficient number, since it is larger than the sum of its proper divisors (1).

121560601 is an equidigital number, since it uses as much as digits as its factorization.

121560601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 121560601 is about 11025.4524170213. The cubic root of 121560601 is about 495.3714193647.

It can be divided in two parts, 1215 and 60601, that added together give a palindrome (61816).

The spelling of 121560601 in words is "one hundred twenty-one million, five hundred sixty thousand, six hundred one".