2013221311 has 4 divisors (see below), whose sum is σ = 2131646112. Its totient is φ = 1894796512.

The previous prime is 2013221297. The next prime is 2013221339. The reversal of 2013221311 is 1131223102.

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

It is a cyclic number.

It is not a de Polignac number, because 2013221311 - 2¹⁵ = 2013188543 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 (2013221351) 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, 59212375 + ... + 59212408.

It is an arithmetic number, because the mean of its divisors is an integer number (532911528).

Almost surely, 2^2013221311 is an apocalyptic number.

2013221311 is a deficient number, since it is larger than the sum of its proper divisors (118424801).

2013221311 is a wasteful number, since it uses less digits than its factorization.

2013221311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118424800.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2013221311 is about 44868.9348101780. The cubic root of 2013221311 is about 1262.6912558796.

Adding to 2013221311 its reverse (1131223102), we get a palindrome (3144444413).

The spelling of 2013221311 in words is "two billion, thirteen million, two hundred twenty-one thousand, three hundred eleven".