203222420424 has 128 divisors (see below), whose sum is σ = 570793267200. Its totient is φ = 66988296000.

The previous prime is 203222420417. The next prime is 203222420431. The reversal of 203222420424 is 424024222302.

It is an interprime number because it is at equal distance from previous prime (203222420417) and next prime (203222420431).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16702167 + ... + 16714329.

It is an arithmetic number, because the mean of its divisors is an integer number (4459322400).

Almost surely, 2^203222420424 is an apocalyptic number.

203222420424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203222420424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285396633600).

203222420424 is an abundant number, since it is smaller than the sum of its proper divisors (367570846776).

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

203222420424 is a wasteful number, since it uses less digits than its factorization.

203222420424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13032 (or 13022 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 203222420424 its reverse (424024222302), we get a palindrome (627246642726).

The spelling of 203222420424 in words is "two hundred three billion, two hundred twenty-two million, four hundred twenty thousand, four hundred twenty-four".