21320021310332 has 12 divisors (see below), whose sum is σ = 37340694686400. Its totient is φ = 10651251399936.

The previous prime is 21320021310317. The next prime is 21320021310337. The reversal of 21320021310332 is 23301312002312.

21320021310332 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×21320021310332² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21320021310298 and 21320021310307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21320021310337) 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, 2189808332 + ... + 2189818067.

It is an arithmetic number, because the mean of its divisors is an integer number (3111724557200).

Almost surely, 2^{21320021310332} is an apocalyptic number.

It is an amenable number.

21320021310332 is a deficient number, since it is larger than the sum of its proper divisors (16020673376068).

21320021310332 is a wasteful number, since it uses less digits than its factorization.

21320021310332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4379627620 (or 4379627618 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21320021310332 its reverse (23301312002312), we get a palindrome (44621333312644).

The spelling of 21320021310332 in words is "twenty-one trillion, three hundred twenty billion, twenty-one million, three hundred ten thousand, three hundred thirty-two".