2013111221 has 8 divisors (see below), whose sum is σ = 2196446304. Its totient is φ = 1829830320.

The previous prime is 2013111187. The next prime is 2013111229. The reversal of 2013111221 is 1221113102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2013111221 - 2⁶ = 2013111157 is a prime.

It is a super-2 number, since 2×2013111221² = 8105233576232221682, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2013111196 and 2013111205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2013111229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135650 + ... + 149756.

It is an arithmetic number, because the mean of its divisors is an integer number (274555788).

Almost surely, 2^2013111221 is an apocalyptic number.

It is an amenable number.

2013111221 is a deficient number, since it is larger than the sum of its proper divisors (183335083).

2013111221 is a wasteful number, since it uses less digits than its factorization.

2013111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27091.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 2013111221 is about 44867.7079980692. The cubic root of 2013111221 is about 1262.6682393317.

Adding to 2013111221 its reverse (1221113102), we get a palindrome (3234224323).

The spelling of 2013111221 in words is "two billion, thirteen million, one hundred eleven thousand, two hundred twenty-one".