1100111109972 has 48 divisors (see below), whose sum is σ = 3005181578112. Its totient is φ = 306651179520.

The previous prime is 1100111109917. The next prime is 1100111109973. The reversal of 1100111109972 is 2799011110011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100111109973) 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 15 ways as a sum of consecutive naturals, for example, 159710713 + ... + 159717600.

It is an arithmetic number, because the mean of its divisors is an integer number (62607949544).

Almost surely, 2^{1100111109972} is an apocalyptic number.

1100111109972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1100111109972 is an abundant number, since it is smaller than the sum of its proper divisors (1905070468140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1100111109972 is a wasteful number, since it uses less digits than its factorization.

1100111109972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319428368 (or 319428366 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 33.

Adding to 1100111109972 its reverse (2799011110011), we get a palindrome (3899122219983).

The spelling of 1100111109972 in words is "one trillion, one hundred billion, one hundred eleven million, one hundred nine thousand, nine hundred seventy-two".