21422605224 has 64 divisors (see below), whose sum is σ = 53947238400. Its totient is φ = 7088898816.

The previous prime is 21422605223. The next prime is 21422605249. The reversal of 21422605224 is 42250622412.

It is a junction number, because it is equal to n+sod(n) for n = 21422605191 and 21422605200.

It is not an unprimeable number, because it can be changed into a prime (21422605223) 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 15 ways as a sum of consecutive naturals, for example, 3039897 + ... + 3046935.

It is an arithmetic number, because the mean of its divisors is an integer number (842925600).

Almost surely, 2^21422605224 is an apocalyptic number.

21422605224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21422605224 is an abundant number, since it is smaller than the sum of its proper divisors (32524633176).

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

21422605224 is a wasteful number, since it uses less digits than its factorization.

21422605224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7954 (or 7950 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

The spelling of 21422605224 in words is "twenty-one billion, four hundred twenty-two million, six hundred five thousand, two hundred twenty-four".