21324102132 has 48 divisors (see below), whose sum is σ = 51371292672. Its totient is φ = 6880043520.

The previous prime is 21324102131. The next prime is 21324102161. The reversal of 21324102132 is 23120142312.

It is a junction number, because it is equal to n+sod(n) for n = 21324102099 and 21324102108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21324102131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108153 + ... + 233120.

It is an arithmetic number, because the mean of its divisors is an integer number (1070235264).

Almost surely, 2^21324102132 is an apocalyptic number.

It is an amenable number.

21324102132 is an abundant number, since it is smaller than the sum of its proper divisors (30047190540).

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

21324102132 is a wasteful number, since it uses less digits than its factorization.

21324102132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341448 (or 341446 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21324102132 its reverse (23120142312), we get a palindrome (44444244444).

The spelling of 21324102132 in words is "twenty-one billion, three hundred twenty-four million, one hundred two thousand, one hundred thirty-two".