20001210102020 has 24 divisors (see below), whose sum is σ = 48002904245184. Its totient is φ = 6857557749216.

The previous prime is 20001210102007. The next prime is 20001210102061. The reversal of 20001210102020 is 2020101210002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20001210101992 and 20001210102010.

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, 71432893082 + ... + 71432893361.

It is an arithmetic number, because the mean of its divisors is an integer number (2000121010216).

Almost surely, 2^{20001210102020} is an apocalyptic number.

20001210102020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20001210102020 is an abundant number, since it is smaller than the sum of its proper divisors (28001694143164).

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

20001210102020 is a wasteful number, since it uses less digits than its factorization.

20001210102020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142865786459 (or 142865786457 counting only the distinct ones).

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

Adding to 20001210102020 its reverse (2020101210002), we get a palindrome (22021311312022).

The spelling of 20001210102020 in words is "twenty trillion, one billion, two hundred ten million, one hundred two thousand, twenty".