12002139800 has 192 divisors, whose sum is σ = 33271203840. Its totient is φ = 3939840000.

The previous prime is 12002139763. The next prime is 12002139803. The reversal of 12002139800 is 893120021.

It is a super-3 number, since 3×12002139800³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12002139800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002139803) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4208375 + ... + 4211225.

It is an arithmetic number, because the mean of its divisors is an integer number (173287520).

Almost surely, 2^12002139800 is an apocalyptic number.

12002139800 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 12002139800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16635601920).

12002139800 is an abundant number, since it is smaller than the sum of its proper divisors (21269064040).

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

12002139800 is a wasteful number, since it uses less digits than its factorization.

12002139800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3002 (or 2993 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

Adding to 12002139800 its reverse (893120021), we get a palindrome (12895259821).

The spelling of 12002139800 in words is "twelve billion, two million, one hundred thirty-nine thousand, eight hundred".