221341013 has 12 divisors (see below), whose sum is σ = 234269280. Its totient is φ = 209094696.

The previous prime is 221340991. The next prime is 221341019. The reversal of 221341013 is 310143122.

221341013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221341013 - 2¹² = 221336917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221340982 and 221341000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221341019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 175178 + ... + 176436.

It is an arithmetic number, because the mean of its divisors is an integer number (19522440).

Almost surely, 2^221341013 is an apocalyptic number.

It is an amenable number.

221341013 is a deficient number, since it is larger than the sum of its proper divisors (12928267).

221341013 is a wasteful number, since it uses less digits than its factorization.

221341013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784 (or 1765 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 221341013 is about 14877.5338346112. The cubic root of 221341013 is about 604.9051719416.

Adding to 221341013 its reverse (310143122), we get a palindrome (531484135).

The spelling of 221341013 in words is "two hundred twenty-one million, three hundred forty-one thousand, thirteen".