20100021201120 has 192 divisors, whose sum is σ = 73725361436160. Its totient is φ = 4507605792768.

The previous prime is 20100021201109. The next prime is 20100021201149. The reversal of 20100021201120 is 2110212000102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20100021201096 and 20100021201105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56257290 + ... + 56613449.

It is an arithmetic number, because the mean of its divisors is an integer number (383986257480).

Almost surely, 2^{20100021201120} is an apocalyptic number.

20100021201120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20100021201120 is an abundant number, since it is smaller than the sum of its proper divisors (53625340235040).

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

20100021201120 is a wasteful number, since it uses less digits than its factorization.

20100021201120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112870817 (or 112870809 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20100021201120 its reverse (2110212000102), we get a palindrome (22210233201222).

The spelling of 20100021201120 in words is "twenty trillion, one hundred billion, twenty-one million, two hundred one thousand, one hundred twenty".