12154422351012 has 96 divisors (see below), whose sum is σ = 28955571603840. Its totient is φ = 3966764405760.

The previous prime is 12154422351011. The next prime is 12154422351053. The reversal of 12154422351012 is 21015322445121.

It is not an unprimeable number, because it can be changed into a prime (12154422351011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 701707312 + ... + 701724632.

It is an arithmetic number, because the mean of its divisors is an integer number (301620537540).

Almost surely, 2^{12154422351012} is an apocalyptic number.

12154422351012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12154422351012 is an abundant number, since it is smaller than the sum of its proper divisors (16801149252828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12154422351012 is a wasteful number, since it uses less digits than its factorization.

12154422351012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19613 (or 19611 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

Adding to 12154422351012 its reverse (21015322445121), we get a palindrome (33169744796133).

The spelling of 12154422351012 in words is "twelve trillion, one hundred fifty-four billion, four hundred twenty-two million, three hundred fifty-one thousand, twelve".