12613166121 has 8 divisors (see below), whose sum is σ = 17548752960. Its totient is φ = 8043178352.

The previous prime is 12613166101. The next prime is 12613166123. The reversal of 12613166121 is 12166131621.

It is a happy number.

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 12613166121 - 2³¹ = 10465682473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12613166123) 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, 91399686 + ... + 91399823.

It is an arithmetic number, because the mean of its divisors is an integer number (2193594120).

Almost surely, 2^12613166121 is an apocalyptic number.

It is an amenable number.

12613166121 is a deficient number, since it is larger than the sum of its proper divisors (4935586839).

12613166121 is a wasteful number, since it uses less digits than its factorization.

12613166121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182799535.

The product of its digits is 2592, while the sum is 30.

Adding to 12613166121 its reverse (12166131621), we get a palindrome (24779297742).

The spelling of 12613166121 in words is "twelve billion, six hundred thirteen million, one hundred sixty-six thousand, one hundred twenty-one".