33001011121 has 4 divisors (see below), whose sum is σ = 35539550452. Its totient is φ = 30462471792.

The previous prime is 33001011119. The next prime is 33001011161. The reversal of 33001011121 is 12111010033.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19919370496 + 13081640625 = 141136^2 + 114375^2 .

It is a cyclic number.

It is not a de Polignac number, because 33001011121 - 2¹ = 33001011119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 2538539317 = 33001011121 / (3 + 3 + 0 + 0 + 1 + 0 + 1 + 1 + 1 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33001011161) 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, 1269269646 + ... + 1269269671.

It is an arithmetic number, because the mean of its divisors is an integer number (8884887613).

Almost surely, 2^33001011121 is an apocalyptic number.

It is an amenable number.

33001011121 is a deficient number, since it is larger than the sum of its proper divisors (2538539331).

33001011121 is a wasteful number, since it uses less digits than its factorization.

33001011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2538539330.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 33001011121 its reverse (12111010033), we get a palindrome (45112021154).

The spelling of 33001011121 in words is "thirty-three billion, one million, eleven thousand, one hundred twenty-one".