221342613 has 8 divisors (see below), whose sum is σ = 295335168. Its totient is φ = 147455904.

The previous prime is 221342591. The next prime is 221342659. The reversal of 221342613 is 316243122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221342613 - 2⁵ = 221342581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221342683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21445 + ... + 30042.

It is an arithmetic number, because the mean of its divisors is an integer number (36916896).

Almost surely, 2^221342613 is an apocalyptic number.

It is an amenable number.

221342613 is a deficient number, since it is larger than the sum of its proper divisors (73992555).

221342613 is a wasteful number, since it uses less digits than its factorization.

221342613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52923.

The product of its digits is 1728, while the sum is 24.

The square root of 221342613 is about 14877.5876068669. The cubic root of 221342613 is about 604.9066294903.

Adding to 221342613 its reverse (316243122), we get a palindrome (537585735).

The spelling of 221342613 in words is "two hundred twenty-one million, three hundred forty-two thousand, six hundred thirteen".