12002120220 has 96 divisors (see below), whose sum is σ = 34401024000. Its totient is φ = 3125161984.

The previous prime is 12002120219. The next prime is 12002120227. The reversal of 12002120220 is 2202120021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 12002120196 and 12002120205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002120227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1261441 + ... + 1270919.

It is an arithmetic number, because the mean of its divisors is an integer number (358344000).

Almost surely, 2^12002120220 is an apocalyptic number.

12002120220 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 12002120220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17200512000).

12002120220 is an abundant number, since it is smaller than the sum of its proper divisors (22398903780).

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

12002120220 is a wasteful number, since it uses less digits than its factorization.

12002120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9987 (or 9985 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 12002120220 its reverse (2202120021), we get a palindrome (14204240241).

The spelling of 12002120220 in words is "twelve billion, two million, one hundred twenty thousand, two hundred twenty".