12154354212000 has 1536 divisors, whose sum is σ = 53823559974912. Its totient is φ = 2315520000000.

The previous prime is 12154354211999. The next prime is 12154354212019. The reversal of 12154354212000 is 21245345121.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 1813808650 + ... + 1813815350.

It is an arithmetic number, because the mean of its divisors is an integer number (35041380192).

Almost surely, 2^{12154354212000} is an apocalyptic number.

12154354212000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12154354212000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26911779987456).

12154354212000 is an abundant number, since it is smaller than the sum of its proper divisors (41669205762912).

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

12154354212000 is a wasteful number, since it uses less digits than its factorization.

12154354212000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6911 (or 6893 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 12154354212000 its reverse (21245345121), we get a palindrome (12175599557121).

The spelling of 12154354212000 in words is "twelve trillion, one hundred fifty-four billion, three hundred fifty-four million, two hundred twelve thousand".