20001011010220 has 48 divisors (see below), whose sum is σ = 42190455450528. Its totient is φ = 7964611752960.

The previous prime is 20001011010091. The next prime is 20001011010251. The reversal of 20001011010220 is 2201011010002.

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

It is a junction number, because it is equal to n+sod(n) for n = 20001011010197 and 20001011010206.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1487287 + ... + 6497233.

It is an arithmetic number, because the mean of its divisors is an integer number (878967821886).

Almost surely, 2^{20001011010220} is an apocalyptic number.

20001011010220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20001011010220 is an abundant number, since it is smaller than the sum of its proper divisors (22189444440308).

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

20001011010220 is a wasteful number, since it uses less digits than its factorization.

20001011010220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5010850 (or 5010848 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20001011010220 its reverse (2201011010002), we get a palindrome (22202022020222).

The spelling of 20001011010220 in words is "twenty trillion, one billion, eleven million, ten thousand, two hundred twenty".