221303013 has 16 divisors (see below), whose sum is σ = 311044800. Its totient is φ = 139570560.

The previous prime is 221303009. The next prime is 221303063. The reversal of 221303013 is 310303122.

It is not a de Polignac number, because 221303013 - 2² = 221303009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221302983 and 221303001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221303063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44433 + ... + 49161.

It is an arithmetic number, because the mean of its divisors is an integer number (19440300).

Almost surely, 2^221303013 is an apocalyptic number.

It is an amenable number.

221303013 is a deficient number, since it is larger than the sum of its proper divisors (89741787).

221303013 is a wasteful number, since it uses less digits than its factorization.

221303013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5572.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 221303013 is about 14876.2566864114. The cubic root of 221303013 is about 604.8705530944.

Adding to 221303013 its reverse (310303122), we get a palindrome (531606135).

The spelling of 221303013 in words is "two hundred twenty-one million, three hundred three thousand, thirteen".