100000212120020 has 48 divisors (see below), whose sum is σ = 214564161385728. Its totient is φ = 39131564522880.

The previous prime is 100000212119989. The next prime is 100000212120043. The reversal of 100000212120020 is 20021212000001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 100000212119983 and 100000212120010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21606071 + ... + 25822910.

It is an arithmetic number, because the mean of its divisors is an integer number (4470086695536).

Almost surely, 2^{100000212120020} is an apocalyptic number.

100000212120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100000212120020 is an abundant number, since it is smaller than the sum of its proper divisors (114563949265708).

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

100000212120020 is a wasteful number, since it uses less digits than its factorization.

100000212120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47431280 (or 47431278 counting only the distinct ones).

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

Adding to 100000212120020 its reverse (20021212000001), we get a palindrome (120021424120021).

The spelling of 100000212120020 in words is "one hundred trillion, two hundred twelve million, one hundred twenty thousand, twenty".