21303320342132 has 12 divisors (see below), whose sum is σ = 39242958525120. Its totient is φ = 10091046477816.

The previous prime is 21303320342047. The next prime is 21303320342137. The reversal of 21303320342132 is 23124302330312.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21303320342095 and 21303320342104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21303320342137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140153423228 + ... + 140153423379.

It is an arithmetic number, because the mean of its divisors is an integer number (3270246543760).

Almost surely, 2^{21303320342132} is an apocalyptic number.

It is an amenable number.

21303320342132 is a deficient number, since it is larger than the sum of its proper divisors (17939638182988).

21303320342132 is a wasteful number, since it uses less digits than its factorization.

21303320342132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280306846630 (or 280306846628 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 21303320342132 its reverse (23124302330312), we get a palindrome (44427622672444).

The spelling of 21303320342132 in words is "twenty-one trillion, three hundred three billion, three hundred twenty million, three hundred forty-two thousand, one hundred thirty-two".