12012220203129 has 6 divisors (see below), whose sum is σ = 17350984737866. Its totient is φ = 8008146802080.

The previous prime is 12012220203097. The next prime is 12012220203227. The reversal of 12012220203129 is 92130202221021.

12012220203129 is a `hidden beast` number, since 1 + 20 + 122 + 202 + 0 + 312 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8039266329600 + 3972953873529 = 2835360^2 + 1993227^2 .

It is not a de Polignac number, because 12012220203129 - 2⁵ = 12012220203097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12012220203229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 667345566832 + ... + 667345566849.

Almost surely, 2^{12012220203129} is an apocalyptic number.

It is an amenable number.

12012220203129 is a deficient number, since it is larger than the sum of its proper divisors (5338764534737).

12012220203129 is a wasteful number, since it uses less digits than its factorization.

12012220203129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334691133687 (or 1334691133684 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The spelling of 12012220203129 in words is "twelve trillion, twelve billion, two hundred twenty million, two hundred three thousand, one hundred twenty-nine".