22221220201 has 4 divisors (see below), whose sum is σ = 22552880272. Its totient is φ = 21889560132.

The previous prime is 22221220079. The next prime is 22221220213. The reversal of 22221220201 is 10202212222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22221220201 - 2⁹ = 22221219689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22221220291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165829935 + ... + 165830068.

It is an arithmetic number, because the mean of its divisors is an integer number (5638220068).

Almost surely, 2^22221220201 is an apocalyptic number.

It is an amenable number.

22221220201 is a deficient number, since it is larger than the sum of its proper divisors (331660071).

22221220201 is an equidigital number, since it uses as much as digits as its factorization.

22221220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331660070.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22221220201 its reverse (10202212222), we get a palindrome (32423432423).

The spelling of 22221220201 in words is "twenty-two billion, two hundred twenty-one million, two hundred twenty thousand, two hundred one".