22220284284 has 144 divisors (see below), whose sum is σ = 64941246720. Its totient is φ = 6515877600.

The previous prime is 22220284283. The next prime is 22220284309. The reversal of 22220284284 is 48248202222.

22220284284 is a `hidden beast` number, since 2 + 2 + 220 + 2 + 8 + 428 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220284283) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1131937 + ... + 1151399.

It is an arithmetic number, because the mean of its divisors is an integer number (450980880).

Almost surely, 2^22220284284 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 22220284284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32470623360).

22220284284 is an abundant number, since it is smaller than the sum of its proper divisors (42720962436).

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

22220284284 is a wasteful number, since it uses less digits than its factorization.

22220284284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19549 (or 19510 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 36.

The spelling of 22220284284 in words is "twenty-two billion, two hundred twenty million, two hundred eighty-four thousand, two hundred eighty-four".