20001012220000 has 240 divisors, whose sum is σ = 56336025826080. Its totient is φ = 6845151744000.

The previous prime is 20001012219997. The next prime is 20001012220031. The reversal of 20001012220000 is 2221010002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 77851756 + ... + 78108244.

It is an arithmetic number, because the mean of its divisors is an integer number (234733440942).

Almost surely, 2^{20001012220000} is an apocalyptic number.

20001012220000 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 20001012220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28168012913040).

20001012220000 is an abundant number, since it is smaller than the sum of its proper divisors (36335013606080).

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

20001012220000 is an equidigital number, since it uses as much as digits as its factorization.

20001012220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257083 (or 257060 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20001012220000 its reverse (2221010002), we get a palindrome (20003233230002).

The spelling of 20001012220000 in words is "twenty trillion, one billion, twelve million, two hundred twenty thousand".