21324402302 has 32 divisors (see below), whose sum is σ = 38944012032. Its totient is φ = 8548654464.

The previous prime is 21324402269. The next prime is 21324402317. The reversal of 21324402302 is 20320442312.

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 15 ways as a sum of consecutive naturals, for example, 236048 + ... + 313635.

It is an arithmetic number, because the mean of its divisors is an integer number (1217000376).

Almost surely, 2^21324402302 is an apocalyptic number.

21324402302 is a deficient number, since it is larger than the sum of its proper divisors (17619609730).

21324402302 is a wasteful number, since it uses less digits than its factorization.

21324402302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549872.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 21324402302 its reverse (20320442312), we get a palindrome (41644844614).

The spelling of 21324402302 in words is "twenty-one billion, three hundred twenty-four million, four hundred two thousand, three hundred two".