20020020010020 has 72 divisors (see below), whose sum is σ = 60750199613376. Its totient is φ = 5336667116352.

The previous prime is 20020020009989. The next prime is 20020020010061. The reversal of 20020020010020 is 2001002002002.

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 = 20020020009984 and 20020020010011.

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 23 ways as a sum of consecutive naturals, for example, 20403562 + ... + 21362241.

It is an arithmetic number, because the mean of its divisors is an integer number (843752772408).

Almost surely, 2^{20020020010020} is an apocalyptic number.

20020020010020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20020020010020 is an abundant number, since it is smaller than the sum of its proper divisors (40730179603356).

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

20020020010020 is a wasteful number, since it uses less digits than its factorization.

20020020010020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41768481 (or 41768476 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 20020020010020 its reverse (2001002002002), we get a palindrome (22021022012022).

The spelling of 20020020010020 in words is "twenty trillion, twenty billion, twenty million, ten thousand, twenty".