2033121021 has 4 divisors (see below), whose sum is σ = 2710828032. Its totient is φ = 1355414012.

The previous prime is 2033121007. The next prime is 2033121031. The reversal of 2033121021 is 1201213302.

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.

It is a cyclic number.

It is not a de Polignac number, because 2033121021 - 2¹⁰ = 2033119997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2033121031) 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, 338853501 + ... + 338853506.

It is an arithmetic number, because the mean of its divisors is an integer number (677707008).

Almost surely, 2^2033121021 is an apocalyptic number.

It is an amenable number.

2033121021 is a deficient number, since it is larger than the sum of its proper divisors (677707011).

2033121021 is an equidigital number, since it uses as much as digits as its factorization.

2033121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677707010.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2033121021 is about 45090.1432798788. The cubic root of 2033121021 is about 1266.8379851920.

Adding to 2033121021 its reverse (1201213302), we get a palindrome (3234334323).

The spelling of 2033121021 in words is "two billion, thirty-three million, one hundred twenty-one thousand, twenty-one".