111100009973 has 2 divisors, whose sum is σ = 111100009974. Its totient is φ = 111100009972.

The previous prime is 111100009967. The next prime is 111100009997. The reversal of 111100009973 is 379900001111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104899549924 + 6200460049 = 323882^2 + 78743^2 .

It is a cyclic number.

It is not a de Polignac number, because 111100009973 - 2⁸ = 111100009717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111100009913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55550004986 + 55550004987.

It is an arithmetic number, because the mean of its divisors is an integer number (55550004987).

Almost surely, 2^111100009973 is an apocalyptic number.

It is an amenable number.

111100009973 is a deficient number, since it is larger than the sum of its proper divisors (1).

111100009973 is an equidigital number, since it uses as much as digits as its factorization.

111100009973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1701, while the sum is 32.

The spelling of 111100009973 in words is "one hundred eleven billion, one hundred million, nine thousand, nine hundred seventy-three".