22421042420 has 24 divisors (see below), whose sum is σ = 53810502144. Its totient is φ = 7687214496.

The previous prime is 22421042417. The next prime is 22421042447. The reversal of 22421042420 is 2424012422.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80075012 + ... + 80075291.

It is an arithmetic number, because the mean of its divisors is an integer number (2242104256).

Almost surely, 2^22421042420 is an apocalyptic number.

22421042420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22421042420 is an abundant number, since it is smaller than the sum of its proper divisors (31389459724).

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

22421042420 is a wasteful number, since it uses less digits than its factorization.

22421042420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160150319 (or 160150317 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 22421042420 its reverse (2424012422), we get a palindrome (24845054842).

The spelling of 22421042420 in words is "twenty-two billion, four hundred twenty-one million, forty-two thousand, four hundred twenty".