22302232221 has 32 divisors (see below), whose sum is σ = 32355279360. Its totient is φ = 13607433216.

The previous prime is 22302232217. The next prime is 22302232229. The reversal of 22302232221 is 12223220322.

It is not a de Polignac number, because 22302232221 - 2² = 22302232217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22302232229) 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, 6427275 + ... + 6430743.

It is an arithmetic number, because the mean of its divisors is an integer number (1011102480).

Almost surely, 2^22302232221 is an apocalyptic number.

It is an amenable number.

22302232221 is a deficient number, since it is larger than the sum of its proper divisors (10053047139).

22302232221 is a wasteful number, since it uses less digits than its factorization.

22302232221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6933.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 22302232221 its reverse (12223220322), we get a palindrome (34525452543).

The spelling of 22302232221 in words is "twenty-two billion, three hundred two million, two hundred thirty-two thousand, two hundred twenty-one".