22212240000 has 160 divisors (see below), whose sum is σ = 73728774240. Its totient is φ = 5923200000.

The previous prime is 22212239983. The next prime is 22212240031. The reversal of 22212240000 is 4221222.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 193725 + ... + 286275.

It is an arithmetic number, because the mean of its divisors is an integer number (460804839).

Almost surely, 2^22212240000 is an apocalyptic number.

22212240000 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 22212240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36864387120).

22212240000 is an abundant number, since it is smaller than the sum of its proper divisors (51516534240).

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

22212240000 is an frugal number, since it uses more digits than its factorization.

22212240000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92588 (or 92561 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 22212240000 its reverse (4221222), we get a palindrome (22216461222).

The spelling of 22212240000 in words is "twenty-two billion, two hundred twelve million, two hundred forty thousand".