2011033221 has 32 divisors (see below), whose sum is σ = 2835191808. Its totient is φ = 1265436480.

The previous prime is 2011033187. The next prime is 2011033223. The reversal of 2011033221 is 1223301102.

It is not a de Polignac number, because 2011033221 - 2¹⁰ = 2011032197 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2011033221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011033223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3107920 + ... + 3108566.

It is an arithmetic number, because the mean of its divisors is an integer number (88599744).

Almost surely, 2^2011033221 is an apocalyptic number.

It is an amenable number.

2011033221 is a deficient number, since it is larger than the sum of its proper divisors (824158587).

2011033221 is a wasteful number, since it uses less digits than its factorization.

2011033221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201.

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

The square root of 2011033221 is about 44844.5450528824. The cubic root of 2011033221 is about 1262.2336337833.

Adding to 2011033221 its reverse (1223301102), we get a palindrome (3234334323).

The spelling of 2011033221 in words is "two billion, eleven million, thirty-three thousand, two hundred twenty-one".