22221330210 has 160 divisors (see below), whose sum is σ = 61076695680. Its totient is φ = 5795649792.

The previous prime is 22221330179. The next prime is 22221330211. The reversal of 22221330210 is 1203312222.

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 (22221330211) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6923086 + ... + 6926294.

It is an arithmetic number, because the mean of its divisors is an integer number (381729348).

Almost surely, 2^22221330210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22221330210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30538347840).

22221330210 is an abundant number, since it is smaller than the sum of its proper divisors (38855365470).

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

22221330210 is a wasteful number, since it uses less digits than its factorization.

22221330210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3414 (or 3405 counting only the distinct ones).

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

Adding to 22221330210 its reverse (1203312222), we get a palindrome (23424642432).

The spelling of 22221330210 in words is "twenty-two billion, two hundred twenty-one million, three hundred thirty thousand, two hundred ten".