121447713 has 4 divisors (see below), whose sum is σ = 161930288. Its totient is φ = 80965140.

The previous prime is 121447661. The next prime is 121447717. The reversal of 121447713 is 317744121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 317744121 = 3 ⋅105914707.

It is not a de Polignac number, because 121447713 - 2⁸ = 121447457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121447717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20241283 + ... + 20241288.

It is an arithmetic number, because the mean of its divisors is an integer number (40482572).

Almost surely, 2^121447713 is an apocalyptic number.

It is an amenable number.

121447713 is a deficient number, since it is larger than the sum of its proper divisors (40482575).

121447713 is an equidigital number, since it uses as much as digits as its factorization.

121447713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40482574.

The product of its digits is 4704, while the sum is 30.

The square root of 121447713 is about 11020.3318008125. The cubic root of 121447713 is about 495.2180286338.

The spelling of 121447713 in words is "one hundred twenty-one million, four hundred forty-seven thousand, seven hundred thirteen".