20012020100000 has 72 divisors (see below), whose sum is σ = 49245179067756. Its totient is φ = 8004808000000.

The previous prime is 20012020099961. The next prime is 20012020100021. The reversal of 20012020100000 is 102021002.

It can be written as a sum of positive squares in 6 ways, for example, as 122239738384 + 19889780361616 = 349628^2 + 4459796^2 .

It is a Harshad number since it is a multiple of its sum of digits (8).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99960101 + ... + 100160100.

Almost surely, 2^{20012020100000} is an apocalyptic number.

20012020100000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20012020100000 is an abundant number, since it is smaller than the sum of its proper divisors (29233158967756).

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

20012020100000 is an frugal number, since it uses more digits than its factorization.

20012020100000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200120236 (or 200120208 counting only the distinct ones).

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

Adding to 20012020100000 its reverse (102021002), we get a palindrome (20012122121002).

The spelling of 20012020100000 in words is "twenty trillion, twelve billion, twenty million, one hundred thousand".