202222432421 has 4 divisors (see below), whose sum is σ = 202228333344. Its totient is φ = 202216531500.

The previous prime is 202222432397. The next prime is 202222432459. The reversal of 202222432421 is 124234222202.

It is a happy number.

202222432421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 202222432421 - 2³⁰ = 201148690597 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 (202222432471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2898755 + ... + 2967696.

It is an arithmetic number, because the mean of its divisors is an integer number (50557083336).

Almost surely, 2^202222432421 is an apocalyptic number.

It is an amenable number.

202222432421 is a deficient number, since it is larger than the sum of its proper divisors (5900923).

202222432421 is an equidigital number, since it uses as much as digits as its factorization.

202222432421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5900922.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 202222432421 its reverse (124234222202), we get a palindrome (326456654623).

The spelling of 202222432421 in words is "two hundred two billion, two hundred twenty-two million, four hundred thirty-two thousand, four hundred twenty-one".