221241313243 has 8 divisors (see below), whose sum is σ = 221767889616. Its totient is φ = 220715172000.

The previous prime is 221241313199. The next prime is 221241313273. The reversal of 221241313243 is 342313142122.

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

It is a cyclic number.

It is not a de Polignac number, because 221241313243 - 2¹⁷ = 221241182171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221241313273) 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, 920880 + ... + 1136002.

It is an arithmetic number, because the mean of its divisors is an integer number (27720986202).

Almost surely, 2^221241313243 is an apocalyptic number.

221241313243 is a deficient number, since it is larger than the sum of its proper divisors (526576373).

221241313243 is a wasteful number, since it uses less digits than its factorization.

221241313243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217565.

The product of its digits is 6912, while the sum is 28.

Adding to 221241313243 its reverse (342313142122), we get a palindrome (563554455365).

The spelling of 221241313243 in words is "two hundred twenty-one billion, two hundred forty-one million, three hundred thirteen thousand, two hundred forty-three".