1100120031232 has 64 divisors (see below), whose sum is σ = 2206875396600. Its totient is φ = 548392796160.

The previous prime is 1100120031193. The next prime is 1100120031247. The reversal of 1100120031232 is 2321300210011.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10795494 + ... + 10896922.

Almost surely, 2^{1100120031232} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1100120031232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1103437698300).

1100120031232 is an abundant number, since it is smaller than the sum of its proper divisors (1106755365368).

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

1100120031232 is an frugal number, since it uses more digits than its factorization.

1100120031232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101790 (or 101762 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1100120031232 its reverse (2321300210011), we get a palindrome (3421420241243).

The spelling of 1100120031232 in words is "one trillion, one hundred billion, one hundred twenty million, thirty-one thousand, two hundred thirty-two".