1123212013993 has 2 divisors, whose sum is σ = 1123212013994. Its totient is φ = 1123212013992.

The previous prime is 1123212013967. The next prime is 1123212014021. The reversal of 1123212013993 is 3993102123211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1068229736704 + 54982277289 = 1033552^2 + 234483^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123212013993 - 2⁹ = 1123212013481 is a prime.

It is a super-2 number, since 2×1123212013993² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1123212013933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561606006996 + 561606006997.

It is an arithmetic number, because the mean of its divisors is an integer number (561606006997).

Almost surely, 2^{1123212013993} is an apocalyptic number.

It is an amenable number.

1123212013993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123212013993 is an equidigital number, since it uses as much as digits as its factorization.

1123212013993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 37.

The spelling of 1123212013993 in words is "one trillion, one hundred twenty-three billion, two hundred twelve million, thirteen thousand, nine hundred ninety-three".