33033143021 has 4 divisors (see below), whose sum is σ = 33149868192. Its totient is φ = 32916417852.

The previous prime is 33033143009. The next prime is 33033143023. The reversal of 33033143021 is 12034133033.

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: 12034133033 = 13 ⋅925702541.

It is a cyclic number.

It is not a de Polignac number, because 33033143021 - 2¹⁰ = 33033141997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33033143023) 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, 58362161 + ... + 58362726.

It is an arithmetic number, because the mean of its divisors is an integer number (8287467048).

Almost surely, 2^33033143021 is an apocalyptic number.

It is an amenable number.

33033143021 is a deficient number, since it is larger than the sum of its proper divisors (116725171).

33033143021 is a wasteful number, since it uses less digits than its factorization.

33033143021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116725170.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 33033143021 its reverse (12034133033), we get a palindrome (45067276054).

The spelling of 33033143021 in words is "thirty-three billion, thirty-three million, one hundred forty-three thousand, twenty-one".