121335305 has 16 divisors (see below), whose sum is σ = 179203584. Its totient is φ = 76800960.

The previous prime is 121335301. The next prime is 121335317. The reversal of 121335305 is 503533121.

It is not a de Polignac number, because 121335305 - 2² = 121335301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121335301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132881 + ... + 133790.

It is an arithmetic number, because the mean of its divisors is an integer number (11200224).

Almost surely, 2^121335305 is an apocalyptic number.

It is an amenable number.

121335305 is a deficient number, since it is larger than the sum of its proper divisors (57868279).

121335305 is a wasteful number, since it uses less digits than its factorization.

121335305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266696.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 121335305 is about 11015.2305922300. The cubic root of 121335305 is about 495.0651956437.

Adding to 121335305 its reverse (503533121), we get a palindrome (624868426).

The spelling of 121335305 in words is "one hundred twenty-one million, three hundred thirty-five thousand, three hundred five".