22223422221 has 96 divisors (see below), whose sum is σ = 41590942848. Its totient is φ = 10368207360.

The previous prime is 22223422211. The next prime is 22223422229. The reversal of 22223422221 is 12222432222.

It is not a de Polignac number, because 22223422221 - 2⁶ = 22223422157 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22223422191 and 22223422200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22223422229) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 763491 + ... + 792063.

It is an arithmetic number, because the mean of its divisors is an integer number (433238988).

Almost surely, 2^22223422221 is an apocalyptic number.

22223422221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22223422221 is a deficient number, since it is larger than the sum of its proper divisors (19367520627).

22223422221 is a wasteful number, since it uses less digits than its factorization.

22223422221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28651 (or 28644 counting only the distinct ones).

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

Adding to 22223422221 its reverse (12222432222), we get a palindrome (34445854443).

It can be divided in two parts, 22223 and 422221, that added together give a palindrome (444444).

The spelling of 22223422221 in words is "twenty-two billion, two hundred twenty-three million, four hundred twenty-two thousand, two hundred twenty-one".