12194148121 has 8 divisors (see below), whose sum is σ = 12228525000. Its totient is φ = 12159813120.

The previous prime is 12194148089. The next prime is 12194148133. The reversal of 12194148121 is 12184149121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4507242496 + 7686905625 = 67136^2 + 87675^2 .

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 12194148121 - 2⁵ = 12194148089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12194148191) 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, 626151 + ... + 645331.

It is an arithmetic number, because the mean of its divisors is an integer number (1528565625).

Almost surely, 2^12194148121 is an apocalyptic number.

It is an amenable number.

12194148121 is a deficient number, since it is larger than the sum of its proper divisors (34376879).

12194148121 is a wasteful number, since it uses less digits than its factorization.

12194148121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20939.

The product of its digits is 4608, while the sum is 34.

The spelling of 12194148121 in words is "twelve billion, one hundred ninety-four million, one hundred forty-eight thousand, one hundred twenty-one".