12121235 has 8 divisors (see below), whose sum is σ = 16623456. Its totient is φ = 8311680.

The previous prime is 12121231. The next prime is 12121267. The reversal of 12121235 is 53212121.

It is a happy number.

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

It is not a de Polignac number, because 12121235 - 2² = 12121231 is a prime.

It is a Duffinian number.

It is a plaindrome in base 6.

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (12121231) by changing a digit.

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, 173126 + ... + 173195.

It is an arithmetic number, because the mean of its divisors is an integer number (2077932).

Almost surely, 2^12121235 is an apocalyptic number.

12121235 is a deficient number, since it is larger than the sum of its proper divisors (4502221).

12121235 is an equidigital number, since it uses as much as digits as its factorization.

12121235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346333.

The product of its digits is 120, while the sum is 17.

The square root of 12121235 is about 3481.5564048282. The cubic root of 12121235 is about 229.7112633874.

Adding to 12121235 its reverse (53212121), we get a palindrome (65333356).

The spelling of 12121235 in words is "twelve million, one hundred twenty-one thousand, two hundred thirty-five".