20002012220020 has 24 divisors (see below), whose sum is σ = 42004623966984. Its totient is φ = 8000729020416.

The previous prime is 20002012220017. The next prime is 20002012220117. The reversal of 20002012220020 is 2002221020002.

It can be written as a sum of positive squares in 4 ways, for example, as 1190656333584 + 18811355886436 = 1091172^2 + 4337206^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2555257 + ... + 6821536.

It is an arithmetic number, because the mean of its divisors is an integer number (1750192665291).

Almost surely, 2^{20002012220020} is an apocalyptic number.

20002012220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20002012220020 is an abundant number, since it is smaller than the sum of its proper divisors (22002611746964).

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

20002012220020 is a wasteful number, since it uses less digits than its factorization.

20002012220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9483459 (or 9483457 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 20002012220020 its reverse (2002221020002), we get a palindrome (22004233240022).

The spelling of 20002012220020 in words is "twenty trillion, two billion, twelve million, two hundred twenty thousand, twenty".