33020121121 has 16 divisors (see below), whose sum is σ = 36165355408. Its totient is φ = 29961964800.

The previous prime is 33020121091. The next prime is 33020121137. The reversal of 33020121121 is 12112102033.

It can be written as a sum of positive squares in 8 ways, for example, as 17535056400 + 15485064721 = 132420^2 + 124439^2 .

It is a cyclic number.

It is not a de Polignac number, because 33020121121 - 2⁷ = 33020120993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 33020121095 and 33020121104.

It is not an unprimeable number, because it can be changed into a prime (33020121721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1368655 + ... + 1392571.

It is an arithmetic number, because the mean of its divisors is an integer number (2260334713).

Almost surely, 2^33020121121 is an apocalyptic number.

It is an amenable number.

33020121121 is a deficient number, since it is larger than the sum of its proper divisors (3145234287).

33020121121 is a wasteful number, since it uses less digits than its factorization.

33020121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25732.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 33020121121 its reverse (12112102033), we get a palindrome (45132223154).

The spelling of 33020121121 in words is "thirty-three billion, twenty million, one hundred twenty-one thousand, one hundred twenty-one".