12001101100 has 72 divisors (see below), whose sum is σ = 27527838800. Its totient is φ = 4528742400.

The previous prime is 12001101053. The next prime is 12001101121. The reversal of 12001101100 is 110110021.

It is a super-2 number, since 2×12001101100² (a number of 21 digits) contains 22 as substring.

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, 444796 + ... + 471004.

Almost surely, 2^12001101100 is an apocalyptic number.

12001101100 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 12001101100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13763919400).

12001101100 is an abundant number, since it is smaller than the sum of its proper divisors (15526737700).

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

12001101100 is a wasteful number, since it uses less digits than its factorization.

12001101100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26483 (or 26476 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 12001101100 its reverse (110110021), we get a palindrome (12111211121).

The spelling of 12001101100 in words is "twelve billion, one million, one hundred one thousand, one hundred".