121112305 has 8 divisors (see below), whose sum is σ = 145406952. Its totient is φ = 96841728.

The previous prime is 121112291. The next prime is 121112311. The reversal of 121112305 is 503211121.

It can be written as a sum of positive squares in 4 ways, for example, as 38229489 + 82882816 = 6183^2 + 9104^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121112305 - 2⁷ = 121112177 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8049 + ... + 17521.

It is an arithmetic number, because the mean of its divisors is an integer number (18175869).

Almost surely, 2^121112305 is an apocalyptic number.

It is an amenable number.

121112305 is a deficient number, since it is larger than the sum of its proper divisors (24294647).

121112305 is an equidigital number, since it uses as much as digits as its factorization.

121112305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12035.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 121112305 is about 11005.1035887901. The cubic root of 121112305 is about 494.7617191423.

Adding to 121112305 its reverse (503211121), we get a palindrome (624323426).

The spelling of 121112305 in words is "one hundred twenty-one million, one hundred twelve thousand, three hundred five".