22211222111993 has 2 divisors, whose sum is σ = 22211222111994. Its totient is φ = 22211222111992.

The previous prime is 22211222111989. The next prime is 22211222112029. The reversal of 22211222111993 is 39911122211222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21110468619769 + 1100753492224 = 4594613^2 + 1049168^2 .

It is a cyclic number.

It is not a de Polignac number, because 22211222111993 - 2² = 22211222111989 is a prime.

It is not a weakly prime, because it can be changed into another prime (22211222111293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11105611055996 + 11105611055997.

It is an arithmetic number, because the mean of its divisors is an integer number (11105611055997).

Almost surely, 2^{22211222111993} is an apocalyptic number.

It is an amenable number.

22211222111993 is a deficient number, since it is larger than the sum of its proper divisors (1).

22211222111993 is an equidigital number, since it uses as much as digits as its factorization.

22211222111993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 38.

The spelling of 22211222111993 in words is "twenty-two trillion, two hundred eleven billion, two hundred twenty-two million, one hundred eleven thousand, nine hundred ninety-three".