21032312102032 has 80 divisors (see below), whose sum is σ = 50824926317952. Its totient is φ = 8191245864960.

The previous prime is 21032312101973. The next prime is 21032312102033. The reversal of 21032312102032 is 23020121323012.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 21032312101994 and 21032312102012.

It is not an unprimeable number, because it can be changed into a prime (21032312102033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97303 + ... + 6486454.

Almost surely, 2^{21032312102032} is an apocalyptic number.

21032312102032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21032312102032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25412463158976).

21032312102032 is an abundant number, since it is smaller than the sum of its proper divisors (29792614215920).

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

21032312102032 is a wasteful number, since it uses less digits than its factorization.

21032312102032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6586376 (or 6586370 counting only the distinct ones).

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

Adding to 21032312102032 its reverse (23020121323012), we get a palindrome (44052433425044).

The spelling of 21032312102032 in words is "twenty-one trillion, thirty-two billion, three hundred twelve million, one hundred two thousand, thirty-two".