22002100000 has 72 divisors (see below), whose sum is σ = 54142573716. Its totient is φ = 8800800000.

The previous prime is 22002099979. The next prime is 22002100013. The reversal of 22002100000 is 120022.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 934158096 + 21067941904 = 30564^2 + 145148^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10011 + ... + 210010.

Almost surely, 2^22002100000 is an apocalyptic number.

22002100000 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 22002100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27071286858).

22002100000 is an abundant number, since it is smaller than the sum of its proper divisors (32140473716).

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

22002100000 is an frugal number, since it uses more digits than its factorization.

22002100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220056 (or 220028 counting only the distinct ones).

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

Adding to 22002100000 its reverse (120022), we get a palindrome (22002220022).

The spelling of 22002100000 in words is "twenty-two billion, two million, one hundred thousand".