22210023440 has 160 divisors (see below), whose sum is σ = 57250800000. Its totient is φ = 7945871360.

The previous prime is 22210023427. The next prime is 22210023461. The reversal of 22210023440 is 4432001222.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14815811 + ... + 14817309.

It is an arithmetic number, because the mean of its divisors is an integer number (357817500).

Almost surely, 2^22210023440 is an apocalyptic number.

22210023440 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 22210023440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28625400000).

22210023440 is an abundant number, since it is smaller than the sum of its proper divisors (35040776560).

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

22210023440 is a wasteful number, since it uses less digits than its factorization.

22210023440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785 (or 1779 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 22210023440 its reverse (4432001222), we get a palindrome (26642024662).

The spelling of 22210023440 in words is "twenty-two billion, two hundred ten million, twenty-three thousand, four hundred forty".