12002111100 has 432 divisors, whose sum is σ = 44847129600. Its totient is φ = 2626767360.

The previous prime is 12002111087. The next prime is 12002111123. The reversal of 12002111100 is 111120021.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 32703117 + ... + 32703483.

It is an arithmetic number, because the mean of its divisors is an integer number (103812800).

Almost surely, 2^12002111100 is an apocalyptic number.

12002111100 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 12002111100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22423564800).

12002111100 is an abundant number, since it is smaller than the sum of its proper divisors (32845018500).

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

12002111100 is a wasteful number, since it uses less digits than its factorization.

12002111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602 (or 592 counting only the distinct ones).

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

Adding to 12002111100 its reverse (111120021), we get a palindrome (12113231121).

The spelling of 12002111100 in words is "twelve billion, two million, one hundred eleven thousand, one hundred".