203222420143 has 4 divisors (see below), whose sum is σ = 203408352088. Its totient is φ = 203036488200.

The previous prime is 203222420129. The next prime is 203222420179. The reversal of 203222420143 is 341024222302.

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 203222420143 - 2¹⁷ = 203222289071 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 (203222420183) 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, 92964333 + ... + 92966518.

It is an arithmetic number, because the mean of its divisors is an integer number (50852088022).

Almost surely, 2^203222420143 is an apocalyptic number.

203222420143 is a deficient number, since it is larger than the sum of its proper divisors (185931945).

203222420143 is a wasteful number, since it uses less digits than its factorization.

203222420143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185931944.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 203222420143 its reverse (341024222302), we get a palindrome (544246642445).

The spelling of 203222420143 in words is "two hundred three billion, two hundred twenty-two million, four hundred twenty thousand, one hundred forty-three".