12001102201220 has 144 divisors (see below), whose sum is σ = 27771566739840. Its totient is φ = 4353045903360.

The previous prime is 12001102201199. The next prime is 12001102201327. The reversal of 12001102201220 is 2210220110021.

It is a junction number, because it is equal to n+sod(n) for n = 12001102201195 and 12001102201204.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2573684609 + ... + 2573689271.

It is an arithmetic number, because the mean of its divisors is an integer number (192858102360).

Almost surely, 2^{12001102201220} is an apocalyptic number.

12001102201220 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 12001102201220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13885783369920).

12001102201220 is an abundant number, since it is smaller than the sum of its proper divisors (15770464538620).

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

12001102201220 is a wasteful number, since it uses less digits than its factorization.

12001102201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7146 (or 7133 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12001102201220 its reverse (2210220110021), we get a palindrome (14211322311241).

The spelling of 12001102201220 in words is "twelve trillion, one billion, one hundred two million, two hundred one thousand, two hundred twenty".