22012100000221 has 12 divisors (see below), whose sum is σ = 23244814876800. Its totient is φ = 20841712465608.

The previous prime is 22012100000167. The next prime is 22012100000227. The reversal of 22012100000221 is 12200000121022.

It is a happy number.

It is not a de Polignac number, because 22012100000221 - 2²¹ = 22012097903069 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 (22012100000227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16697391 + ... + 17967388.

It is an arithmetic number, because the mean of its divisors is an integer number (1937067906400).

Almost surely, 2^{22012100000221} is an apocalyptic number.

It is an amenable number.

22012100000221 is a deficient number, since it is larger than the sum of its proper divisors (1232714876579).

22012100000221 is a wasteful number, since it uses less digits than its factorization.

22012100000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34666576 (or 34666557 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22012100000221 its reverse (12200000121022), we get a palindrome (34212100121243).

The spelling of 22012100000221 in words is "twenty-two trillion, twelve billion, one hundred million, two hundred twenty-one", and thus it is an aban number.