10021232320 has 112 divisors (see below), whose sum is σ = 27402739200. Its totient is φ = 3452267520.

The previous prime is 10021232279. The next prime is 10021232359. The reversal of 10021232320 is 2323212001.

It is a super-2 number, since 2×10021232320² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 10021232294 and 10021232303.

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, 8040 + ... + 141799.

Almost surely, 2^10021232320 is an apocalyptic number.

10021232320 is a gapful number since it is divisible by the number (10) 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 10021232320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13701369600).

10021232320 is an abundant number, since it is smaller than the sum of its proper divisors (17381506880).

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

10021232320 is a wasteful number, since it uses less digits than its factorization.

10021232320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149886 (or 149876 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 10021232320 its reverse (2323212001), we get a palindrome (12344444321).

The spelling of 10021232320 in words is "ten billion, twenty-one million, two hundred thirty-two thousand, three hundred twenty".