22210001320 has 128 divisors (see below), whose sum is σ = 55085184000. Its totient is φ = 8009487360.

The previous prime is 22210001299. The next prime is 22210001323. The reversal of 22210001320 is 2310001222.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 22210001320.

It is not an unprimeable number, because it can be changed into a prime (22210001323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4021521 + ... + 4027039.

It is an arithmetic number, because the mean of its divisors is an integer number (430353000).

Almost surely, 2^22210001320 is an apocalyptic number.

22210001320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22210001320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27542592000).

22210001320 is an abundant number, since it is smaller than the sum of its proper divisors (32875182680).

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

22210001320 is a wasteful number, since it uses less digits than its factorization.

22210001320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5723 (or 5719 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 22210001320 its reverse (2310001222), we get a palindrome (24520002542).

The spelling of 22210001320 in words is "twenty-two billion, two hundred ten million, one thousand, three hundred twenty".