12100010421 has 4 divisors (see below), whose sum is σ = 16133347232. Its totient is φ = 8066673612.

The previous prime is 12100010393. The next prime is 12100010441. The reversal of 12100010421 is 12401000121.

It is a happy number.

12100010421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12100010421 - 2²³ = 12091621813 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12100010397 and 12100010406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100010441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2016668401 + ... + 2016668406.

It is an arithmetic number, because the mean of its divisors is an integer number (4033336808).

Almost surely, 2^12100010421 is an apocalyptic number.

It is an amenable number.

12100010421 is a deficient number, since it is larger than the sum of its proper divisors (4033336811).

12100010421 is an equidigital number, since it uses as much as digits as its factorization.

12100010421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4033336810.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12100010421 its reverse (12401000121), we get a palindrome (24501010542).

The spelling of 12100010421 in words is "twelve billion, one hundred million, ten thousand, four hundred twenty-one".