21312120300132 has 24 divisors (see below), whose sum is σ = 49757378630400. Its totient is φ = 7099883252896.

The previous prime is 21312120300073. The next prime is 21312120300137. The reversal of 21312120300132 is 23100302121312.

It is a junction number, because it is equal to n+sod(n) for n = 21312120300099 and 21312120300108.

It is not an unprimeable number, because it can be changed into a prime (21312120300137) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 519584532 + ... + 519625547.

It is an arithmetic number, because the mean of its divisors is an integer number (2073224109600).

Almost surely, 2^{21312120300132} is an apocalyptic number.

It is an amenable number.

21312120300132 is an abundant number, since it is smaller than the sum of its proper divisors (28445258330268).

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

21312120300132 is a wasteful number, since it uses less digits than its factorization.

21312120300132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039211795 (or 1039211793 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21312120300132 its reverse (23100302121312), we get a palindrome (44412422421444).

The spelling of 21312120300132 in words is "twenty-one trillion, three hundred twelve billion, one hundred twenty million, three hundred thousand, one hundred thirty-two".