12421023104 has 64 divisors (see below), whose sum is σ = 28331389440. Its totient is φ = 5313624576.

The previous prime is 12421023101. The next prime is 12421023107. The reversal of 12421023104 is 40132012421.

It is an interprime number because it is at equal distance from previous prime (12421023101) and next prime (12421023107).

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12421023101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 492137 + ... + 516759.

It is an arithmetic number, because the mean of its divisors is an integer number (442677960).

Almost surely, 2^12421023104 is an apocalyptic number.

12421023104 is a gapful number since it is divisible by the number (14) 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 12421023104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14165694720).

12421023104 is an abundant number, since it is smaller than the sum of its proper divisors (15910366336).

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

12421023104 is an equidigital number, since it uses as much as digits as its factorization.

12421023104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25207 (or 25195 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12421023104 its reverse (40132012421), we get a palindrome (52553035525).

The spelling of 12421023104 in words is "twelve billion, four hundred twenty-one million, twenty-three thousand, one hundred four".