204223421143 has 4 divisors (see below), whose sum is σ = 233398195600. Its totient is φ = 175048646688.

The previous prime is 204223421111. The next prime is 204223421167. The reversal of 204223421143 is 341124322402.

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 204223421143 - 2⁵ = 204223421111 is a prime.

It is a super-2 number, since 2×204223421143² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204223421543) 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, 14587387218 + ... + 14587387231.

It is an arithmetic number, because the mean of its divisors is an integer number (58349548900).

Almost surely, 2^204223421143 is an apocalyptic number.

204223421143 is a deficient number, since it is larger than the sum of its proper divisors (29174774457).

204223421143 is an equidigital number, since it uses as much as digits as its factorization.

204223421143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29174774456.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 204223421143 its reverse (341124322402), we get a palindrome (545347743545).

The spelling of 204223421143 in words is "two hundred four billion, two hundred twenty-three million, four hundred twenty-one thousand, one hundred forty-three".