20112212210221 has 8 divisors (see below), whose sum is σ = 20135977200000. Its totient is φ = 20088449678448.

The previous prime is 20112212210213. The next prime is 20112212210239. The reversal of 20112212210221 is 12201221221102.

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

It is a cyclic number.

It is not a de Polignac number, because 20112212210221 - 2³ = 20112212210213 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 (20112212210821) 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, 16025680 + ... + 17235046.

It is an arithmetic number, because the mean of its divisors is an integer number (2516997150000).

Almost surely, 2^{20112212210221} is an apocalyptic number.

It is an amenable number.

20112212210221 is a deficient number, since it is larger than the sum of its proper divisors (23764989779).

20112212210221 is a wasteful number, since it uses less digits than its factorization.

20112212210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229003.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 20112212210221 its reverse (12201221221102), we get a palindrome (32313433431323).

The spelling of 20112212210221 in words is "twenty trillion, one hundred twelve billion, two hundred twelve million, two hundred ten thousand, two hundred twenty-one".