2112210000221 has 2 divisors, whose sum is σ = 2112210000222. Its totient is φ = 2112210000220.

The previous prime is 2112210000151. The next prime is 2112210000259. The reversal of 2112210000221 is 1220000122112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1950617256025 + 161592744196 = 1396645^2 + 401986^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112210000221 - 2³⁰ = 2111136258397 is a prime.

It is a super-2 number, since 2×2112210000221² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2112210000196 and 2112210000205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2112210000281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056105000110 + 1056105000111.

It is an arithmetic number, because the mean of its divisors is an integer number (1056105000111).

Almost surely, 2^{2112210000221} is an apocalyptic number.

It is an amenable number.

2112210000221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112210000221 is an equidigital number, since it uses as much as digits as its factorization.

2112210000221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2112210000221 its reverse (1220000122112), we get a palindrome (3332210122333).

The spelling of 2112210000221 in words is "two trillion, one hundred twelve billion, two hundred ten million, two hundred twenty-one", and thus it is an aban number.