22220221201 has 4 divisors (see below), whose sum is σ = 22220520372. Its totient is φ = 22219922032.

The previous prime is 22220221189. The next prime is 22220221211. The reversal of 22220221201 is 10212202222.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 11100729600 + 11119491601 = 105360^2 + 105449^2 .

It is a cyclic number.

It is not a de Polignac number, because 22220221201 - 2⁷ = 22220221073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22220221211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56091 + ... + 218143.

It is an arithmetic number, because the mean of its divisors is an integer number (5555130093).

Almost surely, 2^22220221201 is an apocalyptic number.

It is an amenable number.

22220221201 is a deficient number, since it is larger than the sum of its proper divisors (299171).

22220221201 is a wasteful number, since it uses less digits than its factorization.

22220221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299170.

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

Adding to 22220221201 its reverse (10212202222), we get a palindrome (32432423423).

The spelling of 22220221201 in words is "twenty-two billion, two hundred twenty million, two hundred twenty-one thousand, two hundred one".