111020999993 has 2 divisors, whose sum is σ = 111020999994. Its totient is φ = 111020999992.

The previous prime is 111020999923. The next prime is 111021000007. The reversal of 111020999993 is 399999020111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82968769849 + 28052230144 = 288043^2 + 167488^2 .

It is a cyclic number.

It is not a de Polignac number, because 111020999993 - 2¹⁰ = 111020998969 is a prime.

It is not a weakly prime, because it can be changed into another prime (111020999923) 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, 55510499996 + 55510499997.

It is an arithmetic number, because the mean of its divisors is an integer number (55510499997).

Almost surely, 2^111020999993 is an apocalyptic number.

It is an amenable number.

111020999993 is a deficient number, since it is larger than the sum of its proper divisors (1).

111020999993 is an equidigital number, since it uses as much as digits as its factorization.

111020999993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 354294, while the sum is 53.

The spelling of 111020999993 in words is "one hundred eleven billion, twenty million, nine hundred ninety-nine thousand, nine hundred ninety-three".