21120103032 has 256 divisors, whose sum is σ = 62827315200. Its totient is φ = 5792947200.

The previous prime is 21120103019. The next prime is 21120103033. The reversal of 21120103032 is 23030102112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120103033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 139868157 + ... + 139868307.

It is an arithmetic number, because the mean of its divisors is an integer number (245419200).

Almost surely, 2^21120103032 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 21120103032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31413657600).

21120103032 is an abundant number, since it is smaller than the sum of its proper divisors (41707212168).

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

21120103032 is a wasteful number, since it uses less digits than its factorization.

21120103032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466 (or 462 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21120103032 its reverse (23030102112), we get a palindrome (44150205144).

The spelling of 21120103032 in words is "twenty-one billion, one hundred twenty million, one hundred three thousand, thirty-two".