21241224422 has 8 divisors (see below), whose sum is σ = 34758367272. Its totient is φ = 9655102000.

The previous prime is 21241224391. The next prime is 21241224437. The reversal of 21241224422 is 22442214212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21241224422² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21241224391 and 21241224400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 482755079 + ... + 482755122.

It is an arithmetic number, because the mean of its divisors is an integer number (4344795909).

Almost surely, 2^21241224422 is an apocalyptic number.

21241224422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21241224422 is a deficient number, since it is larger than the sum of its proper divisors (13517142850).

21241224422 is a wasteful number, since it uses less digits than its factorization.

21241224422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965510214.

The product of its digits is 4096, while the sum is 26.

Adding to 21241224422 its reverse (22442214212), we get a palindrome (43683438634).

The spelling of 21241224422 in words is "twenty-one billion, two hundred forty-one million, two hundred twenty-four thousand, four hundred twenty-two".