21332110104 has 160 divisors (see below), whose sum is σ = 64360074240. Its totient is φ = 6581995200.

The previous prime is 21332110049. The next prime is 21332110109. The reversal of 21332110104 is 40101123312.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21332110109) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 438939 + ... + 485109.

It is an arithmetic number, because the mean of its divisors is an integer number (402250464).

Almost surely, 2^21332110104 is an apocalyptic number.

21332110104 is a gapful number since it is divisible by the number (24) 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 21332110104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32180037120).

21332110104 is an abundant number, since it is smaller than the sum of its proper divisors (43027964136).

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

21332110104 is a wasteful number, since it uses less digits than its factorization.

21332110104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46243 (or 46230 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21332110104 its reverse (40101123312), we get a palindrome (61433233416).

The spelling of 21332110104 in words is "twenty-one billion, three hundred thirty-two million, one hundred ten thousand, one hundred four".