22141242421 has 4 divisors (see below), whose sum is σ = 22142038912. Its totient is φ = 22140445932.

The previous prime is 22141242419. The next prime is 22141242439. The reversal of 22141242421 is 12424214122.

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 a cyclic number.

It is not a de Polignac number, because 22141242421 - 2¹ = 22141242419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22141242481) 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, 354981 + ... + 412666.

It is an arithmetic number, because the mean of its divisors is an integer number (5535509728).

Almost surely, 2^22141242421 is an apocalyptic number.

It is an amenable number.

22141242421 is a deficient number, since it is larger than the sum of its proper divisors (796491).

22141242421 is an equidigital number, since it uses as much as digits as its factorization.

22141242421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796490.

The product of its digits is 2048, while the sum is 25.

Adding to 22141242421 its reverse (12424214122), we get a palindrome (34565456543).

The spelling of 22141242421 in words is "twenty-two billion, one hundred forty-one million, two hundred forty-two thousand, four hundred twenty-one".