111660099111 has 48 divisors (see below), whose sum is σ = 183291863040. Its totient is φ = 64888776000.

The previous prime is 111660099101. The next prime is 111660099149. The reversal of 111660099111 is 111990066111.

It is not a de Polignac number, because 111660099111 - 2¹⁰ = 111660098087 is a prime.

111660099111 is a strobogrammatic number because it is the same when read upside-down.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111660099101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 167626 + ... + 501416.

It is an arithmetic number, because the mean of its divisors is an integer number (3818580480).

Almost surely, 2^111660099111 is an apocalyptic number.

111660099111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111660099111 is a deficient number, since it is larger than the sum of its proper divisors (71631763929).

111660099111 is a wasteful number, since it uses less digits than its factorization.

111660099111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333948 (or 333945 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 36.

The spelling of 111660099111 in words is "one hundred eleven billion, six hundred sixty million, ninety-nine thousand, one hundred eleven".