33121245 has 8 divisors (see below), whose sum is σ = 52994016. Its totient is φ = 17664656.

The previous prime is 33121213. The next prime is 33121247. The reversal of 33121245 is 54212133.

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 33121245 - 2⁵ = 33121213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33121247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1104027 + ... + 1104056.

It is an arithmetic number, because the mean of its divisors is an integer number (6624252).

Almost surely, 2^33121245 is an apocalyptic number.

It is an amenable number.

33121245 is a deficient number, since it is larger than the sum of its proper divisors (19872771).

33121245 is a wasteful number, since it uses less digits than its factorization.

33121245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208091.

The product of its digits is 720, while the sum is 21.

The square root of 33121245 is about 5755.1059938111. The cubic root of 33121245 is about 321.1457786441.

Adding to 33121245 its reverse (54212133), we get a palindrome (87333378).

It can be divided in two parts, 33 and 121245, that added together give a triangular number (121278 = T₄₉₂).

The spelling of 33121245 in words is "thirty-three million, one hundred twenty-one thousand, two hundred forty-five".