12020001120 has 144 divisors (see below), whose sum is σ = 41417000352. Its totient is φ = 3174174720.

The previous prime is 12020001109. The next prime is 12020001121. The reversal of 12020001120 is 2110002021.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020001121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107800 + ... + 188840.

It is an arithmetic number, because the mean of its divisors is an integer number (287618058).

Almost surely, 2^12020001120 is an apocalyptic number.

12020001120 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 12020001120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20708500176).

12020001120 is an abundant number, since it is smaller than the sum of its proper divisors (29396999232).

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

12020001120 is a wasteful number, since it uses less digits than its factorization.

12020001120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81165 (or 81154 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 12020001120 its reverse (2110002021), we get a palindrome (14130003141).

Subtracting from 12020001120 its reverse (2110002021), we obtain a palindrome (9909999099).

The spelling of 12020001120 in words is "twelve billion, twenty million, one thousand, one hundred twenty".