12121233 has 4 divisors (see below), whose sum is σ = 16161648. Its totient is φ = 8080820.

The previous prime is 12121231. The next prime is 12121267. The reversal of 12121233 is 33212121.

12121233 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12121233 - 2¹ = 12121231 is a prime.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2020203 + ... + 2020208.

It is an arithmetic number, because the mean of its divisors is an integer number (4040412).

Almost surely, 2^12121233 is an apocalyptic number.

It is an amenable number.

12121233 is a deficient number, since it is larger than the sum of its proper divisors (4040415).

12121233 is an equidigital number, since it uses as much as digits as its factorization.

12121233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4040414.

The product of its digits is 72, while the sum is 15.

The square root of 12121233 is about 3481.5561176003. The cubic root of 12121233 is about 229.7112507533.

Adding to 12121233 its reverse (33212121), we get a palindrome (45333354).

The spelling of 12121233 in words is "twelve million, one hundred twenty-one thousand, two hundred thirty-three".