22011212000 has 96 divisors (see below), whose sum is σ = 54255277440. Its totient is φ = 8776204800.

The previous prime is 22011211987. The next prime is 22011212033. The reversal of 22011212000 is 21211022.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1259321 + ... + 1276679.

It is an arithmetic number, because the mean of its divisors is an integer number (565159140).

Almost surely, 2^22011212000 is an apocalyptic number.

22011212000 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 22011212000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27127638720).

22011212000 is an abundant number, since it is smaller than the sum of its proper divisors (32244065440).

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

22011212000 is a wasteful number, since it uses less digits than its factorization.

22011212000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17701 (or 17683 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22011212000 its reverse (21211022), we get a palindrome (22032423022).

The spelling of 22011212000 in words is "twenty-two billion, eleven million, two hundred twelve thousand".