12000655021 has 8 divisors (see below), whose sum is σ = 12170499264. Its totient is φ = 11831752320.

The previous prime is 12000655013. The next prime is 12000655027. The reversal of 12000655021 is 12055600021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12000655021 - 2³ = 12000655013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12000654983 and 12000655001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000655027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209695 + ... + 260716.

It is an arithmetic number, because the mean of its divisors is an integer number (1521312408).

Almost surely, 2^12000655021 is an apocalyptic number.

It is an amenable number.

12000655021 is a deficient number, since it is larger than the sum of its proper divisors (169844243).

12000655021 is an equidigital number, since it uses as much as digits as its factorization.

12000655021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470771.

The product of its (nonzero) digits is 600, while the sum is 22.

Multiplying 12000655021 by its sum of digits (22), we get a palindrome (264014410462).

The spelling of 12000655021 in words is "twelve billion, six hundred fifty-five thousand, twenty-one".