121300913 has 2 divisors, whose sum is σ = 121300914. Its totient is φ = 121300912.

The previous prime is 121300903. The next prime is 121300957. The reversal of 121300913 is 319003121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111365809 + 9935104 = 10553^2 + 3152^2 .

It is an emirp because it is prime and its reverse (319003121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121300913 - 2⁴ = 121300897 is a prime.

It is a super-2 number, since 2×121300913² = 29427822989267138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121300903) 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, 60650456 + 60650457.

It is an arithmetic number, because the mean of its divisors is an integer number (60650457).

Almost surely, 2^121300913 is an apocalyptic number.

It is an amenable number.

121300913 is a deficient number, since it is larger than the sum of its proper divisors (1).

121300913 is an equidigital number, since it uses as much as digits as its factorization.

121300913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 121300913 is about 11013.6693703779. The cubic root of 121300913 is about 495.0184164831.

The spelling of 121300913 in words is "one hundred twenty-one million, three hundred thousand, nine hundred thirteen".