22120120000 has 140 divisors (see below), whose sum is σ = 59838326856. Its totient is φ = 8043520000.

The previous prime is 22120119977. The next prime is 22120120003. The reversal of 22120120000 is 2102122.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (22120120003) by changing a digit.

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, 414864 + ... + 465136.

Almost surely, 2^22120120000 is an apocalyptic number.

22120120000 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 22120120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29919163428).

22120120000 is an abundant number, since it is smaller than the sum of its proper divisors (37718206856).

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

22120120000 is an equidigital number, since it uses as much as digits as its factorization.

22120120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50316 (or 50291 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 22120120000 its reverse (2102122), we get a palindrome (22122222122).

The spelling of 22120120000 in words is "twenty-two billion, one hundred twenty million, one hundred twenty thousand".