20424221324 has 12 divisors (see below), whose sum is σ = 38491801824. Its totient is φ = 9426563664.

The previous prime is 20424221317. The next prime is 20424221341. The reversal of 20424221324 is 42312242402.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 20424221293 and 20424221302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196386692 + ... + 196386795.

It is an arithmetic number, because the mean of its divisors is an integer number (3207650152).

Almost surely, 2^20424221324 is an apocalyptic number.

It is an amenable number.

20424221324 is a deficient number, since it is larger than the sum of its proper divisors (18067580500).

20424221324 is a wasteful number, since it uses less digits than its factorization.

20424221324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392773504 (or 392773502 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 20424221324 its reverse (42312242402), we get a palindrome (62736463726).

The spelling of 20424221324 in words is "twenty billion, four hundred twenty-four million, two hundred twenty-one thousand, three hundred twenty-four".