22212021330 has 192 divisors, whose sum is σ = 63526226400. Its totient is φ = 5359656960.

The previous prime is 22212021319. The next prime is 22212021331. The reversal of 22212021330 is 3312021222.

It can be written as a sum of positive squares in 16 ways, for example, as 547419609 + 21664601721 = 23397^2 + 147189^2 .

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

It is not an unprimeable number, because it can be changed into a prime (22212021331) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11934600 + ... + 11936460.

Almost surely, 2^22212021330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22212021330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31763113200).

22212021330 is an abundant number, since it is smaller than the sum of its proper divisors (41314205070).

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

22212021330 is a wasteful number, since it uses less digits than its factorization.

22212021330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189 (or 2186 counting only the distinct ones).

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

Adding to 22212021330 its reverse (3312021222), we get a palindrome (25524042552).

The spelling of 22212021330 in words is "twenty-two billion, two hundred twelve million, twenty-one thousand, three hundred thirty".