2013440221 has 4 divisors (see below), whose sum is σ = 2168320252. Its totient is φ = 1858560192.

The previous prime is 2013440207. The next prime is 2013440291. The reversal of 2013440221 is 1220443102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 92371321 + 1921068900 = 9611^2 + 43830^2 .

It is a cyclic number.

It is not a de Polignac number, because 2013440221 - 2¹⁵ = 2013407453 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 (2013440201) 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, 77439996 + ... + 77440021.

It is an arithmetic number, because the mean of its divisors is an integer number (542080063).

Almost surely, 2^2013440221 is an apocalyptic number.

It is an amenable number.

2013440221 is a deficient number, since it is larger than the sum of its proper divisors (154880031).

2013440221 is a wasteful number, since it uses less digits than its factorization.

2013440221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154880030.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2013440221 is about 44871.3741822111. The cubic root of 2013440221 is about 1262.7370209632.

Adding to 2013440221 its reverse (1220443102), we get a palindrome (3233883323).

The spelling of 2013440221 in words is "two billion, thirteen million, four hundred forty thousand, two hundred twenty-one".