21320023210132 has 6 divisors (see below), whose sum is σ = 37310040617738. Its totient is φ = 10660011605064.

The previous prime is 21320023210063. The next prime is 21320023210133. The reversal of 21320023210132 is 23101232002312.

It can be written as a sum of positive squares in only one way, i.e., 18535143120516 + 2784880089616 = 4305246^2 + 1668796^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21320023210133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2665002901263 + ... + 2665002901270.

Almost surely, 2^{21320023210132} is an apocalyptic number.

It is an amenable number.

21320023210132 is a deficient number, since it is larger than the sum of its proper divisors (15990017407606).

21320023210132 is a wasteful number, since it uses less digits than its factorization.

21320023210132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5330005802537 (or 5330005802535 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21320023210132 its reverse (23101232002312), we get a palindrome (44421255212444).

The spelling of 21320023210132 in words is "twenty-one trillion, three hundred twenty billion, twenty-three million, two hundred ten thousand, one hundred thirty-two".