22221210330 has 128 divisors (see below), whose sum is σ = 65442297600. Its totient is φ = 5386901760.

The previous prime is 22221210313. The next prime is 22221210343. The reversal of 22221210330 is 3301212222.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 194386 + ... + 286754.

It is an arithmetic number, because the mean of its divisors is an integer number (511267950).

Almost surely, 2^22221210330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22221210330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32721148800).

22221210330 is an abundant number, since it is smaller than the sum of its proper divisors (43221087270).

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

22221210330 is an equidigital number, since it uses as much as digits as its factorization.

22221210330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92408 (or 92390 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 22221210330 its reverse (3301212222), we get a palindrome (25522422552).

The spelling of 22221210330 in words is "twenty-two billion, two hundred twenty-one million, two hundred ten thousand, three hundred thirty".