12005267101 has 4 divisors (see below), whose sum is σ = 12009321792. Its totient is φ = 12001212412.

The previous prime is 12005267017. The next prime is 12005267149. The reversal of 12005267101 is 10176250021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10176250021 = 7 ⋅1453750003.

It is a cyclic number.

It is not a de Polignac number, because 12005267101 - 2²¹ = 12003169949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12005267161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2022901 + ... + 2028826.

It is an arithmetic number, because the mean of its divisors is an integer number (3002330448).

Almost surely, 2^12005267101 is an apocalyptic number.

It is an amenable number.

12005267101 is a deficient number, since it is larger than the sum of its proper divisors (4054691).

12005267101 is an equidigital number, since it uses as much as digits as its factorization.

12005267101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4054690.

The product of its (nonzero) digits is 840, while the sum is 25.

The spelling of 12005267101 in words is "twelve billion, five million, two hundred sixty-seven thousand, one hundred one".