221320001013 has 16 divisors (see below), whose sum is σ = 320896411200. Its totient is φ = 135114276096.

The previous prime is 221320000907. The next prime is 221320001029. The reversal of 221320001013 is 310100023122.

It is not a de Polignac number, because 221320001013 - 2²¹ = 221317903861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221320000983 and 221320001001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221320001093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58641463 + ... + 58645236.

It is an arithmetic number, because the mean of its divisors is an integer number (20056025700).

Almost surely, 2^221320001013 is an apocalyptic number.

It is an amenable number.

221320001013 is a deficient number, since it is larger than the sum of its proper divisors (99576410187).

221320001013 is a wasteful number, since it uses less digits than its factorization.

221320001013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117286756.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 221320001013 its reverse (310100023122), we get a palindrome (531420024135).

The spelling of 221320001013 in words is "two hundred twenty-one billion, three hundred twenty million, one thousand, thirteen".