2021522208 has 24 divisors (see below), whose sum is σ = 5306496048. Its totient is φ = 673840704.

The previous prime is 2021522159. The next prime is 2021522267. The reversal of 2021522208 is 8022251202.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10528666 + ... + 10528857.

It is an arithmetic number, because the mean of its divisors is an integer number (221104002).

Almost surely, 2^2021522208 is an apocalyptic number.

It is an amenable number.

2021522208 is an abundant number, since it is smaller than the sum of its proper divisors (3284973840).

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

2021522208 is a wasteful number, since it uses less digits than its factorization.

2021522208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21057536 (or 21057528 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 2021522208 is about 44961.3412611323. The cubic root of 2021522208 is about 1264.4243154305.

The spelling of 2021522208 in words is "two billion, twenty-one million, five hundred twenty-two thousand, two hundred eight".