20002101201020 has 24 divisors (see below), whose sum is σ = 42005193526800. Its totient is φ = 8000691717632.

The previous prime is 20002101200929. The next prime is 20002101201079. The reversal of 20002101201020 is 2010210120002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20002101200992 and 20002101201010.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 8191925 + ... + 10349484.

It is an arithmetic number, because the mean of its divisors is an integer number (1750216396950).

Almost surely, 2^{20002101201020} is an apocalyptic number.

20002101201020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20002101201020 is an abundant number, since it is smaller than the sum of its proper divisors (22003092325780).

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

20002101201020 is a wasteful number, since it uses less digits than its factorization.

20002101201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18595357 (or 18595355 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20002101201020 its reverse (2010210120002), we get a palindrome (22012311321022).

The spelling of 20002101201020 in words is "twenty trillion, two billion, one hundred one million, two hundred one thousand, twenty".