12154012234 has 32 divisors (see below), whose sum is σ = 22896115200. Its totient is φ = 4808177136.

The previous prime is 12154012223. The next prime is 12154012237. The reversal of 12154012234 is 43221045121.

It is a junction number, because it is equal to n+sod(n) for n = 12154012199 and 12154012208.

It is not an unprimeable number, because it can be changed into a prime (12154012237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 672514 + ... + 690349.

It is an arithmetic number, because the mean of its divisors is an integer number (715503600).

Almost surely, 2^12154012234 is an apocalyptic number.

12154012234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12154012234 is a deficient number, since it is larger than the sum of its proper divisors (10742102966).

12154012234 is a wasteful number, since it uses less digits than its factorization.

12154012234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362899 (or 1362885 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 12154012234 its reverse (43221045121), we get a palindrome (55375057355).

The spelling of 12154012234 in words is "twelve billion, one hundred fifty-four million, twelve thousand, two hundred thirty-four".