220001100000 has 576 divisors, whose sum is σ = 794221666560. Its totient is φ = 52876800000.

The previous prime is 220001099999. The next prime is 220001100047. The reversal of 220001100000 is 1100022.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 537899796 + ... + 537900204.

It is an arithmetic number, because the mean of its divisors is an integer number (1378857060).

Almost surely, 2^220001100000 is an apocalyptic number.

220001100000 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 220001100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (397110833280).

220001100000 is an abundant number, since it is smaller than the sum of its proper divisors (574220566560).

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

220001100000 is a wasteful number, since it uses less digits than its factorization.

220001100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621 (or 593 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

Adding to 220001100000 its reverse (1100022), we get a palindrome (220002200022).

The spelling of 220001100000 in words is "two hundred twenty billion, one million, one hundred thousand".