20001100220010 has 320 divisors, whose sum is σ = 67600020483072. Its totient is φ = 4130224141824.

The previous prime is 20001100219999. The next prime is 20001100220051. The reversal of 20001100220010 is 1002200110002.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20001100219974 and 20001100220001.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 577684 + ... + 6351056.

Almost surely, 2^{20001100220010} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20001100220010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33800010241536).

20001100220010 is an abundant number, since it is smaller than the sum of its proper divisors (47598920263062).

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

20001100220010 is a wasteful number, since it uses less digits than its factorization.

20001100220010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5773459 (or 5773450 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20001100220010 its reverse (1002200110002), we get a palindrome (21003300330012).

The spelling of 20001100220010 in words is "twenty trillion, one billion, one hundred million, two hundred twenty thousand, ten".