22200006666121 has 2 divisors, whose sum is σ = 22200006666122. Its totient is φ = 22200006666120.

The previous prime is 22200006666109. The next prime is 22200006666127. The reversal of 22200006666121 is 12166660000222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21841368575625 + 358638090496 = 4673475^2 + 598864^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22200006666121 is a prime.

It is not a weakly prime, because it can be changed into another prime (22200006666127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11100003333060 + 11100003333061.

It is an arithmetic number, because the mean of its divisors is an integer number (11100003333061).

Almost surely, 2^{22200006666121} is an apocalyptic number.

It is an amenable number.

22200006666121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22200006666121 is an equidigital number, since it uses as much as digits as its factorization.

22200006666121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 34.

Adding to 22200006666121 its reverse (12166660000222), we get a palindrome (34366666666343).

The spelling of 22200006666121 in words is "twenty-two trillion, two hundred billion, six million, six hundred sixty-six thousand, one hundred twenty-one".