111110999999 has 2 divisors, whose sum is σ = 111111000000. Its totient is φ = 111110999998.

The previous prime is 111110999971. The next prime is 111111000041. The reversal of 111110999999 is 999999011111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111110999999 - 2¹² = 111110995903 is a prime.

It is a Sophie Germain prime.

111110999999 is a modest number, since divided by 999999 gives 111110 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111110999929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55555499999 + 55555500000.

It is an arithmetic number, because the mean of its divisors is an integer number (55555500000).

Almost surely, 2^111110999999 is an apocalyptic number.

111110999999 is a deficient number, since it is larger than the sum of its proper divisors (1).

111110999999 is an equidigital number, since it uses as much as digits as its factorization.

111110999999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 531441, while the sum is 59.

The spelling of 111110999999 in words is "one hundred eleven billion, one hundred ten million, nine hundred ninety-nine thousand, nine hundred ninety-nine".