22022100006440 has 32 divisors (see below), whose sum is σ = 49549866065280. Its totient is φ = 8808814926912.

The previous prime is 22022100006409. The next prime is 22022100006449. The reversal of 22022100006440 is 4460000122022.

It is not an unprimeable number, because it can be changed into a prime (22022100006449) 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, 20747117 + ... + 21782723.

It is an arithmetic number, because the mean of its divisors is an integer number (1548433314540).

Almost surely, 2^{22022100006440} is an apocalyptic number.

22022100006440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22022100006440 is an abundant number, since it is smaller than the sum of its proper divisors (27527766058840).

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

22022100006440 is a wasteful number, since it uses less digits than its factorization.

22022100006440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1567241 (or 1567237 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 22022100006440 its reverse (4460000122022), we get a palindrome (26482100128462).

The spelling of 22022100006440 in words is "twenty-two trillion, twenty-two billion, one hundred million, six thousand, four hundred forty".