121326305 has 16 divisors (see below), whose sum is σ = 154440000. Its totient is φ = 91241280.

The previous prime is 121326299. The next prime is 121326307. The reversal of 121326305 is 503623121.

It is not a de Polignac number, because 121326305 - 2¹² = 121322209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121326307) 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, 7571 + ... + 17319.

It is an arithmetic number, because the mean of its divisors is an integer number (9652500).

Almost surely, 2^121326305 is an apocalyptic number.

It is an amenable number.

121326305 is a deficient number, since it is larger than the sum of its proper divisors (33113695).

121326305 is a wasteful number, since it uses less digits than its factorization.

121326305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9904.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 121326305 is about 11014.8220593889. The cubic root of 121326305 is about 495.0529549170.

Adding to 121326305 its reverse (503623121), we get a palindrome (624949426).

The spelling of 121326305 in words is "one hundred twenty-one million, three hundred twenty-six thousand, three hundred five".