221313342 has 8 divisors (see below), whose sum is σ = 442626696. Its totient is φ = 73771112.

The previous prime is 221313341. The next prime is 221313347. The reversal of 221313342 is 243313122.

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

221313342 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221313341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18442773 + ... + 18442784.

It is an arithmetic number, because the mean of its divisors is an integer number (55328337).

Almost surely, 2^221313342 is an apocalyptic number.

221313342 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221313342 is a wasteful number, since it uses less digits than its factorization.

221313342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36885562.

The product of its digits is 864, while the sum is 21.

The square root of 221313342 is about 14876.6038463085. The cubic root of 221313342 is about 604.8799634358.

Adding to 221313342 its reverse (243313122), we get a palindrome (464626464).

The spelling of 221313342 in words is "two hundred twenty-one million, three hundred thirteen thousand, three hundred forty-two".