1115550011100 has 576 divisors, whose sum is σ = 3866995607552. Its totient is φ = 242984448000.

The previous prime is 1115550011033. The next prime is 1115550011129. The reversal of 1115550011100 is 11100555111.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1767907785 + ... + 1767908415.

Almost surely, 2^{1115550011100} is an apocalyptic number.

1115550011100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1115550011100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1933497803776).

1115550011100 is an abundant number, since it is smaller than the sum of its proper divisors (2751445596452).

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

1115550011100 is a wasteful number, since it uses less digits than its factorization.

1115550011100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126 (or 1119 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 21.

Adding to 1115550011100 its reverse (11100555111), we get a palindrome (1126650566211).

The spelling of 1115550011100 in words is "one trillion, one hundred fifteen billion, five hundred fifty million, eleven thousand, one hundred".