1100100505500 has 72 divisors (see below), whose sum is σ = 3470450408880. Its totient is φ = 293360133600.

The previous prime is 1100100505487. The next prime is 1100100505519. The reversal of 1100100505500 is 55050010011.

1100100505500 is a `hidden beast` number, since 1 + 10 + 0 + 100 + 5 + 0 + 550 + 0 = 666.

It is a super-2 number, since 2×1100100505500² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 122228890 + ... + 122237889.

Almost surely, 2^{1100100505500} is an apocalyptic number.

1100100505500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100100505500 is an abundant number, since it is smaller than the sum of its proper divisors (2370349903380).

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

1100100505500 is a wasteful number, since it uses less digits than its factorization.

1100100505500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244466804 (or 244466789 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 18.

Adding to 1100100505500 its reverse (55050010011), we get a palindrome (1155150515511).

The spelling of 1100100505500 in words is "one trillion, one hundred billion, one hundred million, five hundred five thousand, five hundred".