12135133155 has 16 divisors (see below), whose sum is σ = 20260396800. Its totient is φ = 6190676448.

The previous prime is 12135133099. The next prime is 12135133187. The reversal of 12135133155 is 55133153121.

It is not a de Polignac number, because 12135133155 - 2⁶ = 12135133091 is a prime.

It is a super-2 number, since 2×12135133155² (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 15 ways as a sum of consecutive naturals, for example, 17586805 + ... + 17587494.

It is an arithmetic number, because the mean of its divisors is an integer number (1266274800).

Almost surely, 2^12135133155 is an apocalyptic number.

12135133155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12135133155 is a deficient number, since it is larger than the sum of its proper divisors (8125263645).

12135133155 is a wasteful number, since it uses less digits than its factorization.

12135133155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35174330.

The product of its digits is 6750, while the sum is 30.

Adding to 12135133155 its reverse (55133153121), we get a palindrome (67268286276).

The spelling of 12135133155 in words is "twelve billion, one hundred thirty-five million, one hundred thirty-three thousand, one hundred fifty-five".