12421325376 has 280 divisors, whose sum is σ = 38113110464. Its totient is φ = 3997486080.

The previous prime is 12421325369. The next prime is 12421325377. The reversal of 12421325376 is 67352312421.

12421325376 is a `hidden beast` number, since 124 + 213 + 253 + 76 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12421325376.

It is not an unprimeable number, because it can be changed into a prime (12421325377) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 22959666 + ... + 22960206.

Almost surely, 2^12421325376 is an apocalyptic number.

12421325376 is a gapful number since it is divisible by the number (16) 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 12421325376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19056555232).

12421325376 is an abundant number, since it is smaller than the sum of its proper divisors (25691785088).

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

12421325376 is a wasteful number, since it uses less digits than its factorization.

12421325376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711 (or 692 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

Adding to 12421325376 its reverse (67352312421), we get a palindrome (79773637797).

The spelling of 12421325376 in words is "twelve billion, four hundred twenty-one million, three hundred twenty-five thousand, three hundred seventy-six".