21324400302 has 64 divisors (see below), whose sum is σ = 45148561920. Its totient is φ = 6695892864.

The previous prime is 21324400301. The next prime is 21324400351. The reversal of 21324400302 is 20300442312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21324400301) 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 31 ways as a sum of consecutive naturals, for example, 21388068 + ... + 21389064.

It is an arithmetic number, because the mean of its divisors is an integer number (705446280).

Almost surely, 2^21324400302 is an apocalyptic number.

21324400302 is an abundant number, since it is smaller than the sum of its proper divisors (23824161618).

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

21324400302 is a wasteful number, since it uses less digits than its factorization.

21324400302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1897.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 21324400302 its reverse (20300442312), we get a palindrome (41624842614).

The spelling of 21324400302 in words is "twenty-one billion, three hundred twenty-four million, four hundred thousand, three hundred two".