12121033 has 4 divisors (see below), whose sum is σ = 12136320. Its totient is φ = 12105748.

The previous prime is 12121009. The next prime is 12121061. The reversal of 12121033 is 33012121.

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 a de Polignac number, because none of the positive numbers 2^k-12121033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12121063) 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, 6385 + ... + 8062.

It is an arithmetic number, because the mean of its divisors is an integer number (3034080).

Almost surely, 2^12121033 is an apocalyptic number.

It is an amenable number.

12121033 is a deficient number, since it is larger than the sum of its proper divisors (15287).

12121033 is an equidigital number, since it uses as much as digits as its factorization.

12121033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15286.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 12121033 is about 3481.5273946933. The cubic root of 12121033 is about 229.7099873366.

Adding to 12121033 its reverse (33012121), we get a palindrome (45133154).

The spelling of 12121033 in words is "twelve million, one hundred twenty-one thousand, thirty-three".