22022202440 has 32 divisors (see below), whose sum is σ = 56628521280. Its totient is φ = 7550469312.

The previous prime is 22022202431. The next prime is 22022202443. The reversal of 22022202440 is 4420222022.

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

It is not an unprimeable number, because it can be changed into a prime (22022202443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39325082 + ... + 39325641.

It is an arithmetic number, because the mean of its divisors is an integer number (1769641290).

Almost surely, 2^22022202440 is an apocalyptic number.

22022202440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22022202440 is an abundant number, since it is smaller than the sum of its proper divisors (34606318840).

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

22022202440 is a wasteful number, since it uses less digits than its factorization.

22022202440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78650741 (or 78650737 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 22022202440 its reverse (4420222022), we get a palindrome (26442424462).

The spelling of 22022202440 in words is "twenty-two billion, twenty-two million, two hundred two thousand, four hundred forty".