22012001220000 has 480 divisors, whose sum is σ = 82913463198720. Its totient is φ = 5055384960000.

The previous prime is 22012001219977. The next prime is 22012001220071. The reversal of 22012001220000 is 2210021022.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 11662329 + ... + 13417671.

It is an arithmetic number, because the mean of its divisors is an integer number (172736381664).

Almost surely, 2^{22012001220000} is an apocalyptic number.

22012001220000 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 22012001220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41456731599360).

22012001220000 is an abundant number, since it is smaller than the sum of its proper divisors (60901461978720).

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

22012001220000 is a wasteful number, since it uses less digits than its factorization.

22012001220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1755406 (or 1755383 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 22012001220000 its reverse (2210021022), we get a palindrome (22014211241022).

The spelling of 22012001220000 in words is "twenty-two trillion, twelve billion, one million, two hundred twenty thousand".