12102011100 has 54 divisors (see below), whose sum is σ = 37933084280. Its totient is φ = 3227202720.

The previous prime is 12102011093. The next prime is 12102011101. The reversal of 12102011100 is 111020121.

It is a happy number.

It is a super-3 number, since 3×12102011100³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102011101) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6722440 + ... + 6724239.

Almost surely, 2^12102011100 is an apocalyptic number.

12102011100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12102011100 is an abundant number, since it is smaller than the sum of its proper divisors (25831073180).

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

12102011100 is a wasteful number, since it uses less digits than its factorization.

12102011100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13446699 (or 13446689 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 12102011100 its reverse (111020121), we get a palindrome (12213031221).

The spelling of 12102011100 in words is "twelve billion, one hundred two million, eleven thousand, one hundred".