221313112013 has 16 divisors (see below), whose sum is σ = 266262712320. Its totient is φ = 179698475376.

The previous prime is 221313111977. The next prime is 221313112019. The reversal of 221313112013 is 310211313122.

It is a happy number.

It is not a de Polignac number, because 221313112013 - 2⁶ = 221313111949 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 (221313112019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1789256 + ... + 1908942.

It is an arithmetic number, because the mean of its divisors is an integer number (16641419520).

Almost surely, 2^221313112013 is an apocalyptic number.

It is an amenable number.

221313112013 is a deficient number, since it is larger than the sum of its proper divisors (44949600307).

221313112013 is a wasteful number, since it uses less digits than its factorization.

221313112013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133616.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 221313112013 its reverse (310211313122), we get a palindrome (531524425135).

The spelling of 221313112013 in words is "two hundred twenty-one billion, three hundred thirteen million, one hundred twelve thousand, thirteen".