22001541320 has 96 divisors (see below), whose sum is σ = 55335873600. Its totient is φ = 7864855680.

The previous prime is 22001541301. The next prime is 22001541377. The reversal of 22001541320 is 2314510022.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22001541292 and 22001541301.

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, 247037 + ... + 324083.

It is an arithmetic number, because the mean of its divisors is an integer number (576415350).

Almost surely, 2^22001541320 is an apocalyptic number.

22001541320 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 22001541320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27667936800).

22001541320 is an abundant number, since it is smaller than the sum of its proper divisors (33334332280).

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

22001541320 is a wasteful number, since it uses less digits than its factorization.

22001541320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77139 (or 77124 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The spelling of 22001541320 in words is "twenty-two billion, one million, five hundred forty-one thousand, three hundred twenty".