11110212221993 has 2 divisors, whose sum is σ = 11110212221994. Its totient is φ = 11110212221992.

The previous prime is 11110212221989. The next prime is 11110212222001. The reversal of 11110212221993 is 39912221201111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9167009677849 + 1943202544144 = 3027707^2 + 1393988^2 .

It is a cyclic number.

It is not a de Polignac number, because 11110212221993 - 2² = 11110212221989 is a prime.

It is not a weakly prime, because it can be changed into another prime (11110212221903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555106110996 + 5555106110997.

It is an arithmetic number, because the mean of its divisors is an integer number (5555106110997).

Almost surely, 2^{11110212221993} is an apocalyptic number.

It is an amenable number.

11110212221993 is a deficient number, since it is larger than the sum of its proper divisors (1).

11110212221993 is an equidigital number, since it uses as much as digits as its factorization.

11110212221993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 35.

The spelling of 11110212221993 in words is "eleven trillion, one hundred ten billion, two hundred twelve million, two hundred twenty-one thousand, nine hundred ninety-three".