33012121 has 8 divisors (see below), whose sum is σ = 34219080. Its totient is φ = 31809792.

The previous prime is 33012097. The next prime is 33012127. The reversal of 33012121 is 12121033.

It can be written as a sum of positive squares in 4 ways, for example, as 7398400 + 25613721 = 2720^2 + 5061^2 .

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 33012121 - 2²¹ = 30914969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33012127) 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, 20481 + ... + 22033.

It is an arithmetic number, because the mean of its divisors is an integer number (4277385).

Almost surely, 2^33012121 is an apocalyptic number.

It is an amenable number.

33012121 is a deficient number, since it is larger than the sum of its proper divisors (1206959).

33012121 is a wasteful number, since it uses less digits than its factorization.

33012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2315.

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

The square root of 33012121 is about 5745.6175473138. The cubic root of 33012121 is about 320.7926994284.

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

It can be divided in two parts, 33012 and 121, that added together give a palindrome (33133).

The spelling of 33012121 in words is "thirty-three million, twelve thousand, one hundred twenty-one".