121344305 has 4 divisors (see below), whose sum is σ = 145613172. Its totient is φ = 97075440.

The previous prime is 121344281. The next prime is 121344319. The reversal of 121344305 is 503443121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64899136 + 56445169 = 8056^2 + 7513^2 .

It is not a de Polignac number, because 121344305 - 2¹⁰ = 121343281 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12134426 + ... + 12134435.

It is an arithmetic number, because the mean of its divisors is an integer number (36403293).

Almost surely, 2^121344305 is an apocalyptic number.

It is an amenable number.

121344305 is a deficient number, since it is larger than the sum of its proper divisors (24268867).

121344305 is an equidigital number, since it uses as much as digits as its factorization.

121344305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24268866.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 121344305 is about 11015.6391099200. The cubic root of 121344305 is about 495.0774357651.

Adding to 121344305 its reverse (503443121), we get a palindrome (624787426).

The spelling of 121344305 in words is "one hundred twenty-one million, three hundred forty-four thousand, three hundred five".