12422221100421 has 48 divisors (see below), whose sum is σ = 18968481552384. Its totient is φ = 7217668260000.

The previous prime is 12422221100411. The next prime is 12422221100543. The reversal of 12422221100421 is 12400112222421.

It is not a de Polignac number, because 12422221100421 - 2¹¹ = 12422221098373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12422221100391 and 12422221100400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12422221100411) 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, 3954355 + ... + 6362496.

It is an arithmetic number, because the mean of its divisors is an integer number (395176699008).

Almost surely, 2^{12422221100421} is an apocalyptic number.

12422221100421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12422221100421 is a deficient number, since it is larger than the sum of its proper divisors (6546260451963).

12422221100421 is a wasteful number, since it uses less digits than its factorization.

12422221100421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10317014 (or 10317003 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 12422221100421 its reverse (12400112222421), we get a palindrome (24822333322842).

The spelling of 12422221100421 in words is "twelve trillion, four hundred twenty-two billion, two hundred twenty-one million, one hundred thousand, four hundred twenty-one".