12222202122221 has 32 divisors (see below), whose sum is σ = 15927934514688. Its totient is φ = 9101266698240.

The previous prime is 12222202122211. The next prime is 12222202122223. The reversal of 12222202122221 is 12222120222221.

12222202122221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12222202122221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222202122223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130307981 + ... + 130401741.

It is an arithmetic number, because the mean of its divisors is an integer number (497747953584).

Almost surely, 2^{12222202122221} is an apocalyptic number.

It is an amenable number.

12222202122221 is a deficient number, since it is larger than the sum of its proper divisors (3705732392467).

12222202122221 is a wasteful number, since it uses less digits than its factorization.

12222202122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178061.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 12222202122221 its reverse (12222120222221), we get a palindrome (24444322344442).

The spelling of 12222202122221 in words is "twelve trillion, two hundred twenty-two billion, two hundred two million, one hundred twenty-two thousand, two hundred twenty-one".