121326397 has 2 divisors, whose sum is σ = 121326398. Its totient is φ = 121326396.

The previous prime is 121326391. The next prime is 121326409. The reversal of 121326397 is 793623121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73633561 + 47692836 = 8581^2 + 6906^2 .

It is a cyclic number.

It is not a de Polignac number, because 121326397 - 2¹¹ = 121324349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121326391) 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, 60663198 + 60663199.

It is an arithmetic number, because the mean of its divisors is an integer number (60663199).

Almost surely, 2^121326397 is an apocalyptic number.

It is an amenable number.

121326397 is a deficient number, since it is larger than the sum of its proper divisors (1).

121326397 is an equidigital number, since it uses as much as digits as its factorization.

121326397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 34.

The square root of 121326397 is about 11014.8262355790. The cubic root of 121326397 is about 495.0530800474.

The spelling of 121326397 in words is "one hundred twenty-one million, three hundred twenty-six thousand, three hundred ninety-seven".