22100020000 has 120 divisors (see below), whose sum is σ = 55117791036. Its totient is φ = 8718336000.

The previous prime is 22100019989. The next prime is 22100020037. The reversal of 22100020000 is 2000122.

It is a happy number.

It can be written as a sum of positive squares in 10 ways, for example, as 845879056 + 21254140944 = 29084^2 + 145788^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1452432 + ... + 1467568.

Almost surely, 2^22100020000 is an apocalyptic number.

22100020000 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 22100020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27558895518).

22100020000 is an abundant number, since it is smaller than the sum of its proper divisors (33017771036).

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

22100020000 is an equidigital number, since it uses as much as digits as its factorization.

22100020000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15240 (or 15217 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

Adding to 22100020000 its reverse (2000122), we get a palindrome (22102020122).

The spelling of 22100020000 in words is "twenty-two billion, one hundred million, twenty thousand".