12055520000420 has 96 divisors (see below), whose sum is σ = 27388883977728. Its totient is φ = 4430922642432.

The previous prime is 12055520000393. The next prime is 12055520000473. The reversal of 12055520000420 is 2400002555021.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 12055520000420.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59061377 + ... + 59265143.

It is an arithmetic number, because the mean of its divisors is an integer number (285300874768).

Almost surely, 2^{12055520000420} is an apocalyptic number.

12055520000420 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 12055520000420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13694441988864).

12055520000420 is an abundant number, since it is smaller than the sum of its proper divisors (15333363977308).

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

12055520000420 is a wasteful number, since it uses less digits than its factorization.

12055520000420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204829 (or 204827 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

Adding to 12055520000420 its reverse (2400002555021), we get a palindrome (14455522555441).

The spelling of 12055520000420 in words is "twelve trillion, fifty-five billion, five hundred twenty million, four hundred twenty", and thus it is an aban number.