1101100100188 has 72 divisors (see below), whose sum is σ = 2306380078800. Its totient is φ = 457807553280.

The previous prime is 1101100100173. The next prime is 1101100100189. The reversal of 1101100100188 is 8810010011011.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101100100189) 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, 1797745 + ... + 2331112.

It is an arithmetic number, because the mean of its divisors is an integer number (32033056650).

Almost surely, 2^{1101100100188} is an apocalyptic number.

It is an amenable number.

1101100100188 is an abundant number, since it is smaller than the sum of its proper divisors (1205279978612).

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

1101100100188 is a wasteful number, since it uses less digits than its factorization.

1101100100188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4128931 (or 4128918 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 22.

Adding to 1101100100188 its reverse (8810010011011), we get a palindrome (9911110111199).

The spelling of 1101100100188 in words is "one trillion, one hundred one billion, one hundred million, one hundred thousand, one hundred eighty-eight".