12220000222021 has 2 divisors, whose sum is σ = 12220000222022. Its totient is φ = 12220000222020.

The previous prime is 12220000221997. The next prime is 12220000222051. The reversal of 12220000222021 is 12022200002221.

12220000222021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11791250277921 + 428749944100 = 3433839^2 + 654790^2 .

It is a cyclic number.

It is not a de Polignac number, because 12220000222021 - 2⁷ = 12220000221893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12220000221986 and 12220000222004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12220000222051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110000111010 + 6110000111011.

It is an arithmetic number, because the mean of its divisors is an integer number (6110000111011).

Almost surely, 2^{12220000222021} is an apocalyptic number.

It is an amenable number.

12220000222021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220000222021 is an equidigital number, since it uses as much as digits as its factorization.

12220000222021 is an evil number, because the sum of its binary digits is even.

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

Adding to 12220000222021 its reverse (12022200002221), we get a palindrome (24242200224242).

The spelling of 12220000222021 in words is "twelve trillion, two hundred twenty billion, two hundred twenty-two thousand, twenty-one".