111101111009972 has 12 divisors (see below), whose sum is σ = 194977728814596. Its totient is φ = 55393188491520.

The previous prime is 111101111009971. The next prime is 111101111010011. The reversal of 111101111009972 is 279900111101111.

It can be written as a sum of positive squares in 2 ways, for example, as 39597242657956 + 71503868352016 = 6292634^2 + 8455996^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111101111009971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39341751779 + ... + 39341754602.

It is an arithmetic number, because the mean of its divisors is an integer number (16248144067883).

Almost surely, 2^{111101111009972} is an apocalyptic number.

It is an amenable number.

111101111009972 is a deficient number, since it is larger than the sum of its proper divisors (83876617804624).

111101111009972 is a wasteful number, since it uses less digits than its factorization.

111101111009972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78683506738 (or 78683506736 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 35.

The spelling of 111101111009972 in words is "one hundred eleven trillion, one hundred one billion, one hundred eleven million, nine thousand, nine hundred seventy-two".