22001210000 has 200 divisors, whose sum is σ = 66413290944. Its totient is φ = 6857280000.

The previous prime is 22001209939. The next prime is 22001210003. The reversal of 22001210000 is 1210022.

It is a tau number, because it is divible by the number of its divisors (200).

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 22001210000.

It is not an unprimeable number, because it can be changed into a prime (22001210003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 755714 + ... + 784286.

Almost surely, 2^22001210000 is an apocalyptic number.

22001210000 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 22001210000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33206645472).

22001210000 is an abundant number, since it is smaller than the sum of its proper divisors (44412080944).

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

22001210000 is a wasteful number, since it uses less digits than its factorization.

22001210000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28619 (or 28598 counting only the distinct ones).

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

Adding to 22001210000 its reverse (1210022), we get a palindrome (22002420022).

The spelling of 22001210000 in words is "twenty-two billion, one million, two hundred ten thousand".