121325569 has 2 divisors, whose sum is σ = 121325570. Its totient is φ = 121325568.

The previous prime is 121325557. The next prime is 121325669. The reversal of 121325569 is 965523121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82137969 + 39187600 = 9063^2 + 6260^2 .

It is an emirp because it is prime and its reverse (965523121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121325569 - 2¹⁷ = 121194497 is a prime.

It is a super-2 number, since 2×121325569² = 29439787386347522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121325539) 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, 60662784 + 60662785.

It is an arithmetic number, because the mean of its divisors is an integer number (60662785).

Almost surely, 2^121325569 is an apocalyptic number.

It is an amenable number.

121325569 is a deficient number, since it is larger than the sum of its proper divisors (1).

121325569 is an equidigital number, since it uses as much as digits as its factorization.

121325569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 34.

The square root of 121325569 is about 11014.7886498108. The cubic root of 121325569 is about 495.0519538707.

The spelling of 121325569 in words is "one hundred twenty-one million, three hundred twenty-five thousand, five hundred sixty-nine".