22201221120221 has 12 divisors (see below), whose sum is σ = 26225864219520. Its totient is φ = 18630395344080.

The previous prime is 22201221120157. The next prime is 22201221120251. The reversal of 22201221120221 is 12202112210222.

It is not a de Polignac number, because 22201221120221 - 2⁶ = 22201221120157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22201221120193 and 22201221120202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201221120251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5971278701 + ... + 5971282418.

It is an arithmetic number, because the mean of its divisors is an integer number (2185488684960).

Almost surely, 2^{22201221120221} is an apocalyptic number.

It is an amenable number.

22201221120221 is a deficient number, since it is larger than the sum of its proper divisors (4024643099299).

22201221120221 is a wasteful number, since it uses less digits than its factorization.

22201221120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11942561156 (or 11942561143 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22201221120221 its reverse (12202112210222), we get a palindrome (34403333330443).

The spelling of 22201221120221 in words is "twenty-two trillion, two hundred one billion, two hundred twenty-one million, one hundred twenty thousand, two hundred twenty-one".