12135133154 has 8 divisors (see below), whose sum is σ = 19273446828. Its totient is φ = 5710650880.

The previous prime is 12135133099. The next prime is 12135133187. The reversal of 12135133154 is 45133153121.

It can be written as a sum of positive squares in 2 ways, for example, as 12129718225 + 5414929 = 110135^2 + 2327^2 .

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

It is a super-2 number, since 2×12135133154² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178457807 + ... + 178457874.

Almost surely, 2^12135133154 is an apocalyptic number.

12135133154 is a deficient number, since it is larger than the sum of its proper divisors (7138313674).

12135133154 is a wasteful number, since it uses less digits than its factorization.

12135133154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356915700.

The product of its digits is 5400, while the sum is 29.

Adding to 12135133154 its reverse (45133153121), we get a palindrome (57268286275).

The spelling of 12135133154 in words is "twelve billion, one hundred thirty-five million, one hundred thirty-three thousand, one hundred fifty-four".