111001009993 has 2 divisors, whose sum is σ = 111001009994. Its totient is φ = 111001009992.

The previous prime is 111001009981. The next prime is 111001010017. The reversal of 111001009993 is 399900100111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89112399289 + 21888610704 = 298517^2 + 147948^2 .

It is an emirp because it is prime and its reverse (399900100111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111001009993 - 2²⁵ = 110967455561 is a prime.

It is not a weakly prime, because it can be changed into another prime (111001009943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55500504996 + 55500504997.

It is an arithmetic number, because the mean of its divisors is an integer number (55500504997).

Almost surely, 2^111001009993 is an apocalyptic number.

It is an amenable number.

111001009993 is a deficient number, since it is larger than the sum of its proper divisors (1).

111001009993 is an equidigital number, since it uses as much as digits as its factorization.

111001009993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2187, while the sum is 34.

The spelling of 111001009993 in words is "one hundred eleven billion, one million, nine thousand, nine hundred ninety-three".