121303488209 has 4 divisors (see below), whose sum is σ = 122106822720. Its totient is φ = 120500153700.

The previous prime is 121303488193. The next prime is 121303488211. The reversal of 121303488209 is 902884303121.

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: 902884303121 = 541 ⋅1668917381.

It is a cyclic number.

It is not a de Polignac number, because 121303488209 - 2⁴ = 121303488193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121303488269) 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 in 3 ways as a sum of consecutive naturals, for example, 401667029 + ... + 401667330.

It is an arithmetic number, because the mean of its divisors is an integer number (30526705680).

Almost surely, 2^121303488209 is an apocalyptic number.

It is an amenable number.

121303488209 is a deficient number, since it is larger than the sum of its proper divisors (803334511).

121303488209 is an equidigital number, since it uses as much as digits as its factorization.

121303488209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803334510.

The product of its (nonzero) digits is 82944, while the sum is 41.

The spelling of 121303488209 in words is "one hundred twenty-one billion, three hundred three million, four hundred eighty-eight thousand, two hundred nine".