22421202221 has 8 divisors (see below), whose sum is σ = 24478025088. Its totient is φ = 20367468000.

The previous prime is 22421202211. The next prime is 22421202239. The reversal of 22421202221 is 12220212422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22421202221 - 2³⁰ = 21347460397 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22421202193 and 22421202202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22421202211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 756965 + ... + 786026.

It is an arithmetic number, because the mean of its divisors is an integer number (3059753136).

Almost surely, 2^22421202221 is an apocalyptic number.

It is an amenable number.

22421202221 is a deficient number, since it is larger than the sum of its proper divisors (2056822867).

22421202221 is a wasteful number, since it uses less digits than its factorization.

22421202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544323.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 22421202221 its reverse (12220212422), we get a palindrome (34641414643).

The spelling of 22421202221 in words is "twenty-two billion, four hundred twenty-one million, two hundred two thousand, two hundred twenty-one".