12000109902 has 48 divisors (see below), whose sum is σ = 26407186176. Its totient is φ = 3632706000.

The previous prime is 12000109879. The next prime is 12000109921. The reversal of 12000109902 is 20990100021.

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, 755163 + ... + 770889.

It is an arithmetic number, because the mean of its divisors is an integer number (550149712).

Almost surely, 2^12000109902 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12000109902, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13203593088).

12000109902 is an abundant number, since it is smaller than the sum of its proper divisors (14407076274).

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

12000109902 is a wasteful number, since it uses less digits than its factorization.

12000109902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16805 (or 16794 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 24.

Adding to 12000109902 its reverse (20990100021), we get a palindrome (32990209923).

The spelling of 12000109902 in words is "twelve billion, one hundred nine thousand, nine hundred two".