20011222310000 has 100 divisors (see below), whose sum is σ = 48455377284600. Its totient is φ = 8003463456000.

The previous prime is 20011222309987. The next prime is 20011222310021. The reversal of 20011222310000 is 1322211002.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (100).

It is a super-2 number, since 2×20011222310000² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 80465846 + ... + 80714154.

It is an arithmetic number, because the mean of its divisors is an integer number (484553772846).

Almost surely, 2^{20011222310000} is an apocalyptic number.

20011222310000 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 20011222310000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24227688642300).

20011222310000 is an abundant number, since it is smaller than the sum of its proper divisors (28444154974600).

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

20011222310000 is an equidigital number, since it uses as much as digits as its factorization.

20011222310000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256396 (or 256375 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20011222310000 its reverse (1322211002), we get a palindrome (20012544521002).

The spelling of 20011222310000 in words is "twenty trillion, eleven billion, two hundred twenty-two million, three hundred ten thousand".