22222220000 has 120 divisors (see below), whose sum is σ = 54910548000. Its totient is φ = 8849792000.

The previous prime is 22222219951. The next prime is 22222220003. The reversal of 22222220000 is 2222222.

It is a happy number.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222220003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4777676 + ... + 4782324.

It is an arithmetic number, because the mean of its divisors is an integer number (457587900).

Almost surely, 2^22222220000 is an apocalyptic number.

22222220000 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 22222220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27455274000).

22222220000 is an abundant number, since it is smaller than the sum of its proper divisors (32688328000).

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

22222220000 is an equidigital number, since it uses as much as digits as its factorization.

22222220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4918 (or 4895 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

Adding to 22222220000 its reverse (2222222), we get a palindrome (22224442222).

22222220000 divided by its reverse (2222222) gives a 4-th power (10000 = 10⁴).

It can be divided in two parts, 2222 and 2220000, that added together give a palindrome (2222222).

The spelling of 22222220000 in words is "twenty-two billion, two hundred twenty-two million, two hundred twenty thousand".