33020121 has 4 divisors (see below), whose sum is σ = 44026832. Its totient is φ = 22013412.

The previous prime is 33020107. The next prime is 33020123. The reversal of 33020121 is 12102033.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12102033 = 3 ⋅4034011.

It is not a de Polignac number, because 33020121 - 2⁵ = 33020089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 33020097 and 33020106.

It is not an unprimeable number, because it can be changed into a prime (33020123) 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 3 ways as a sum of consecutive naturals, for example, 5503351 + ... + 5503356.

It is an arithmetic number, because the mean of its divisors is an integer number (11006708).

Almost surely, 2^33020121 is an apocalyptic number.

It is an amenable number.

33020121 is a deficient number, since it is larger than the sum of its proper divisors (11006711).

33020121 is a wasteful number, since it uses less digits than its factorization.

33020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11006710.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 33020121 is about 5746.3136879220. The cubic root of 33020121 is about 320.8186104599.

Adding to 33020121 its reverse (12102033), we get a palindrome (45122154).

The spelling of 33020121 in words is "thirty-three million, twenty thousand, one hundred twenty-one".