2011030221 has 4 divisors (see below), whose sum is σ = 2681373632. Its totient is φ = 1340686812.

The previous prime is 2011030211. The next prime is 2011030237. The reversal of 2011030221 is 1220301102.

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 not a de Polignac number, because 2011030221 - 2¹³ = 2011022029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011030197 and 2011030206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011030211) 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, 335171701 + ... + 335171706.

It is an arithmetic number, because the mean of its divisors is an integer number (670343408).

Almost surely, 2^2011030221 is an apocalyptic number.

It is an amenable number.

2011030221 is a deficient number, since it is larger than the sum of its proper divisors (670343411).

2011030221 is an equidigital number, since it uses as much as digits as its factorization.

2011030221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670343410.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2011030221 is about 44844.5116039856. The cubic root of 2011030221 is about 1262.2330061287.

Adding to 2011030221 its reverse (1220301102), we get a palindrome (3231331323).

The spelling of 2011030221 in words is "two billion, eleven million, thirty thousand, two hundred twenty-one".