111990066111 has 96 divisors (see below), whose sum is σ = 203853551616. Its totient is φ = 57552768000.

The previous prime is 111990066109. The next prime is 111990066113. The reversal of 111990066111 is 111660099111.

It is an interprime number because it is at equal distance from previous prime (111990066109) and next prime (111990066113).

It is not a de Polignac number, because 111990066111 - 2¹ = 111990066109 is a prime.

111990066111 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 (111990066113) 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 in 95 ways as a sum of consecutive naturals, for example, 26218906 + ... + 26223176.

It is an arithmetic number, because the mean of its divisors is an integer number (2123474496).

Almost surely, 2^111990066111 is an apocalyptic number.

111990066111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111990066111 is a deficient number, since it is larger than the sum of its proper divisors (91863485505).

111990066111 is a wasteful number, since it uses less digits than its factorization.

111990066111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4693 (or 4690 counting only the distinct ones).

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

The spelling of 111990066111 in words is "one hundred eleven billion, nine hundred ninety million, sixty-six thousand, one hundred eleven".