12004220055 has 64 divisors (see below), whose sum is σ = 20361277440. Its totient is φ = 6029337600.

The previous prime is 12004220051. The next prime is 12004220071. The reversal of 12004220055 is 55002240021.

It is a happy number.

It is not a de Polignac number, because 12004220055 - 2² = 12004220051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12004220051) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13974216 + ... + 13975074.

It is an arithmetic number, because the mean of its divisors is an integer number (318144960).

Almost surely, 2^12004220055 is an apocalyptic number.

12004220055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12004220055 is a deficient number, since it is larger than the sum of its proper divisors (8357057385).

12004220055 is a wasteful number, since it uses less digits than its factorization.

12004220055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1672.

The product of its (nonzero) digits is 800, while the sum is 21.

Adding to 12004220055 its reverse (55002240021), we get a palindrome (67006460076).

The spelling of 12004220055 in words is "twelve billion, four million, two hundred twenty thousand, fifty-five".