21313120032032 has 96 divisors (see below), whose sum is σ = 43690445148672. Its totient is φ = 10225141069824.

The previous prime is 21313120031999. The next prime is 21313120032041. The reversal of 21313120032032 is 23023002131312.

It is a junction number, because it is equal to n+sod(n) for n = 21313120031989 and 21313120032007.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 987301943 + ... + 987323529.

It is an arithmetic number, because the mean of its divisors is an integer number (455108803632).

Almost surely, 2^{21313120032032} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21313120032032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21845222574336).

21313120032032 is an abundant number, since it is smaller than the sum of its proper divisors (22377325116640).

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

21313120032032 is a wasteful number, since it uses less digits than its factorization.

21313120032032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33130 (or 33122 counting only the distinct ones).

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

Adding to 21313120032032 its reverse (23023002131312), we get a palindrome (44336122163344).

The spelling of 21313120032032 in words is "twenty-one trillion, three hundred thirteen billion, one hundred twenty million, thirty-two thousand, thirty-two".