2033907221 has 6 divisors (see below), whose sum is σ = 2040074370. Its totient is φ = 2027758656.

The previous prime is 2033907173. The next prime is 2033907229. The reversal of 2033907221 is 1227093302.

It can be written as a sum of positive squares in 3 ways, for example, as 30360100 + 2003547121 = 5510^2 + 44761^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2033907221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2033907229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 104615 + ... + 122523.

It is an arithmetic number, because the mean of its divisors is an integer number (340012395).

Almost surely, 2^2033907221 is an apocalyptic number.

It is an amenable number.

2033907221 is a deficient number, since it is larger than the sum of its proper divisors (6167149).

2033907221 is an frugal number, since it uses more digits than its factorization.

2033907221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18583 (or 18246 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 2033907221 is about 45098.8605288426. The cubic root of 2033907221 is about 1267.0012579239.

The spelling of 2033907221 in words is "two billion, thirty-three million, nine hundred seven thousand, two hundred twenty-one".