22032011520 has 216 divisors, whose sum is σ = 76782451200. Its totient is φ = 5832511488.

The previous prime is 22032011497. The next prime is 22032011557. The reversal of 22032011520 is 2511023022.

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

It is a junction number, because it is equal to n+sod(n) for n = 22032011493 and 22032011502.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1594401 + ... + 1608159.

Almost surely, 2^22032011520 is an apocalyptic number.

22032011520 is a gapful number since it is divisible by the number (20) 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 22032011520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38391225600).

22032011520 is an abundant number, since it is smaller than the sum of its proper divisors (54750439680).

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

22032011520 is a wasteful number, since it uses less digits than its factorization.

22032011520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13925 (or 13908 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 22032011520 its reverse (2511023022), we get a palindrome (24543034542).

The spelling of 22032011520 in words is "twenty-two billion, thirty-two million, eleven thousand, five hundred twenty".