12661219201 has 8 divisors (see below), whose sum is σ = 12971919744. Its totient is φ = 12354195840.

The previous prime is 12661219189. The next prime is 12661219211. The reversal of 12661219201 is 10291216621.

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 12661219201 - 2¹³ = 12661211009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12661219211) 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 7 ways as a sum of consecutive naturals, for example, 912325 + ... + 926098.

It is an arithmetic number, because the mean of its divisors is an integer number (1621489968).

Almost surely, 2^12661219201 is an apocalyptic number.

It is an amenable number.

12661219201 is a deficient number, since it is larger than the sum of its proper divisors (310700543).

12661219201 is an equidigital number, since it uses as much as digits as its factorization.

12661219201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838591.

The product of its (nonzero) digits is 2592, while the sum is 31.

The spelling of 12661219201 in words is "twelve billion, six hundred sixty-one million, two hundred nineteen thousand, two hundred one".