33012031121 has 4 divisors (see below), whose sum is σ = 33153713892. Its totient is φ = 32870348352.

The previous prime is 33012031081. The next prime is 33012031133. The reversal of 33012031121 is 12113021033.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12113021033 = 17 ⋅712530649.

It can be written as a sum of positive squares in 2 ways, for example, as 4640334400 + 28371696721 = 68120^2 + 168439^2 .

It is a cyclic number.

It is not a de Polignac number, because 33012031121 - 2¹⁰ = 33012030097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33012031121.

It is not an unprimeable number, because it can be changed into a prime (33012031181) 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, 70841036 + ... + 70841501.

It is an arithmetic number, because the mean of its divisors is an integer number (8288428473).

Almost surely, 2^33012031121 is an apocalyptic number.

It is an amenable number.

33012031121 is a deficient number, since it is larger than the sum of its proper divisors (141682771).

33012031121 is a wasteful number, since it uses less digits than its factorization.

33012031121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141682770.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 33012031121 its reverse (12113021033), we get a palindrome (45125052154).

The spelling of 33012031121 in words is "thirty-three billion, twelve million, thirty-one thousand, one hundred twenty-one".