202221220424 has 16 divisors (see below), whose sum is σ = 379226603520. Its totient is φ = 101094126160.

The previous prime is 202221220423. The next prime is 202221220447. The reversal of 202221220424 is 424022122202.

It is a self number, because there is not a number n which added to its sum of digits gives 202221220424.

It is not an unprimeable number, because it can be changed into a prime (202221220423) 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, 2008292 + ... + 2106579.

It is an arithmetic number, because the mean of its divisors is an integer number (23701662720).

Almost surely, 2^202221220424 is an apocalyptic number.

It is an amenable number.

202221220424 is a deficient number, since it is larger than the sum of its proper divisors (177005383096).

202221220424 is a wasteful number, since it uses less digits than its factorization.

202221220424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4121020 (or 4121016 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 202221220424 its reverse (424022122202), we get a palindrome (626243342626).

The spelling of 202221220424 in words is "two hundred two billion, two hundred twenty-one million, two hundred twenty thousand, four hundred twenty-four".