22020100000 has 144 divisors (see below), whose sum is σ = 57378499416. Its totient is φ = 8289280000.

The previous prime is 22020099979. The next prime is 22020100013. The reversal of 22020100000 is 102022.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 12132581904 + 9887518096 = 110148^2 + 99436^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1693524 + ... + 1706476.

Almost surely, 2^22020100000 is an apocalyptic number.

22020100000 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 22020100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28689249708).

22020100000 is an abundant number, since it is smaller than the sum of its proper divisors (35358399416).

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

22020100000 is an equidigital number, since it uses as much as digits as its factorization.

22020100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13005 (or 12977 counting only the distinct ones).

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

Adding to 22020100000 its reverse (102022), we get a palindrome (22020202022).

The spelling of 22020100000 in words is "twenty-two billion, twenty million, one hundred thousand".