202203422421 has 32 divisors (see below), whose sum is σ = 361986551808. Its totient is φ = 96960680640.

The previous prime is 202203422387. The next prime is 202203422423. The reversal of 202203422421 is 124224302202.

It is not a de Polignac number, because 202203422421 - 2⁹ = 202203421909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202203422391 and 202203422400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202203422423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33663901 + ... + 33669906.

It is an arithmetic number, because the mean of its divisors is an integer number (11312079744).

Almost surely, 2^202203422421 is an apocalyptic number.

202203422421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

202203422421 is a deficient number, since it is larger than the sum of its proper divisors (159783129387).

202203422421 is a wasteful number, since it uses less digits than its factorization.

202203422421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67333841.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 202203422421 its reverse (124224302202), we get a palindrome (326427724623).

The spelling of 202203422421 in words is "two hundred two billion, two hundred three million, four hundred twenty-two thousand, four hundred twenty-one".