12002102120 has 128 divisors (see below), whose sum is σ = 27923616000. Its totient is φ = 4641331200.

The previous prime is 12002102113. The next prime is 12002102173. The reversal of 12002102120 is 2120120021.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44617346 + ... + 44617614.

It is an arithmetic number, because the mean of its divisors is an integer number (218153250).

Almost surely, 2^12002102120 is an apocalyptic number.

12002102120 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 12002102120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13961808000).

12002102120 is an abundant number, since it is smaller than the sum of its proper divisors (15921513880).

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

12002102120 is a wasteful number, since it uses less digits than its factorization.

12002102120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603 (or 599 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12002102120 its reverse (2120120021), we get a palindrome (14122222141).

The spelling of 12002102120 in words is "twelve billion, two million, one hundred two thousand, one hundred twenty".