1100550111100 has 72 divisors (see below), whose sum is σ = 2648012297616. Its totient is φ = 393639360000.

The previous prime is 1100550111077. The next prime is 1100550111109. The reversal of 1100550111100 is 11110550011.

It is a super-2 number, since 2×1100550111100² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100550111109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8133721 + ... + 8267920.

It is an arithmetic number, because the mean of its divisors is an integer number (36777948578).

Almost surely, 2^{1100550111100} is an apocalyptic number.

1100550111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100550111100 is an abundant number, since it is smaller than the sum of its proper divisors (1547462186516).

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

1100550111100 is a wasteful number, since it uses less digits than its factorization.

1100550111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16401727 (or 16401720 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 16.

Adding to 1100550111100 its reverse (11110550011), we get a palindrome (1111660661111).

It can be divided in two parts, 11005 and 50111100, that added together give a palindrome (50122105).

The spelling of 1100550111100 in words is "one trillion, one hundred billion, five hundred fifty million, one hundred eleven thousand, one hundred".