12421203311100 has 144 divisors (see below), whose sum is σ = 38326484448000. Its totient is φ = 3095050398720.

The previous prime is 12421203311093. The next prime is 12421203311107. The reversal of 12421203311100 is 111330212421.

12421203311100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12421203311093) and next prime (12421203311107).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12421203311107) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8052000 + ... + 9469799.

It is an arithmetic number, because the mean of its divisors is an integer number (266156142000).

Almost surely, 2^{12421203311100} is an apocalyptic number.

12421203311100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12421203311100 is an abundant number, since it is smaller than the sum of its proper divisors (25905281136900).

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

12421203311100 is a wasteful number, since it uses less digits than its factorization.

12421203311100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17521972 (or 17521965 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 12421203311100 its reverse (111330212421), we get a palindrome (12532533523521).

The spelling of 12421203311100 in words is "twelve trillion, four hundred twenty-one billion, two hundred three million, three hundred eleven thousand, one hundred".