12129260217 has 8 divisors (see below), whose sum is σ = 16548448224. Its totient is φ = 7898122848.

The previous prime is 12129260207. The next prime is 12129260257. The reversal of 12129260217 is 71206292121.

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

It is not a de Polignac number, because 12129260217 - 2⁶ = 12129260153 is a prime.

It is a super-3 number, since 3×12129260217³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12129260207) 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, 47012508 + ... + 47012765.

It is an arithmetic number, because the mean of its divisors is an integer number (2068556028).

Almost surely, 2^12129260217 is an apocalyptic number.

It is an amenable number.

12129260217 is a deficient number, since it is larger than the sum of its proper divisors (4419188007).

12129260217 is an equidigital number, since it uses as much as digits as its factorization.

12129260217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94025319.

The product of its (nonzero) digits is 6048, while the sum is 33.

The spelling of 12129260217 in words is "twelve billion, one hundred twenty-nine million, two hundred sixty thousand, two hundred seventeen".