221323302143 has 4 divisors (see below), whose sum is σ = 221328446208. Its totient is φ = 221318158080.

The previous prime is 221323302121. The next prime is 221323302181. The reversal of 221323302143 is 341203323122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221323302143 - 2⁸ = 221323301887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221323302043) 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, 2506946 + ... + 2593727.

It is an arithmetic number, because the mean of its divisors is an integer number (55332111552).

Almost surely, 2^221323302143 is an apocalyptic number.

221323302143 is a deficient number, since it is larger than the sum of its proper divisors (5144065).

221323302143 is an equidigital number, since it uses as much as digits as its factorization.

221323302143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5144064.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 221323302143 its reverse (341203323122), we get a palindrome (562526625265).

The spelling of 221323302143 in words is "two hundred twenty-one billion, three hundred twenty-three million, three hundred two thousand, one hundred forty-three".