22203122221 has 32 divisors (see below), whose sum is σ = 27197786880. Its totient is φ = 17692701696.

The previous prime is 22203122209. The next prime is 22203122257. The reversal of 22203122221 is 12222130222.

It is a cyclic number.

It is not a de Polignac number, because 22203122221 - 2¹⁹ = 22202597933 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 (22203122021) 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, 4498471 + ... + 4503403.

It is an arithmetic number, because the mean of its divisors is an integer number (849930840).

Almost surely, 2^22203122221 is an apocalyptic number.

It is an amenable number.

22203122221 is a deficient number, since it is larger than the sum of its proper divisors (4994664659).

22203122221 is a wasteful number, since it uses less digits than its factorization.

22203122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5413.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 22203122221 its reverse (12222130222), we get a palindrome (34425252443).

The spelling of 22203122221 in words is "twenty-two billion, two hundred three million, one hundred twenty-two thousand, two hundred twenty-one".