21403201324 has 48 divisors (see below), whose sum is σ = 38695811616. Its totient is φ = 10352563200.

The previous prime is 21403201307. The next prime is 21403201327. The reversal of 21403201324 is 42310230412.

It is a junction number, because it is equal to n+sod(n) for n = 21403201295 and 21403201304.

It is not an unprimeable number, because it can be changed into a prime (21403201327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8164734 + ... + 8167354.

It is an arithmetic number, because the mean of its divisors is an integer number (806162742).

Almost surely, 2^21403201324 is an apocalyptic number.

It is an amenable number.

21403201324 is a deficient number, since it is larger than the sum of its proper divisors (17292610292).

21403201324 is a wasteful number, since it uses less digits than its factorization.

21403201324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3106 (or 3104 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21403201324 its reverse (42310230412), we get a palindrome (63713431736).

The spelling of 21403201324 in words is "twenty-one billion, four hundred three million, two hundred one thousand, three hundred twenty-four".