20000111201121 has 16 divisors (see below), whose sum is σ = 26676274823424. Its totient is φ = 13328678046864.

The previous prime is 20000111201069. The next prime is 20000111201131. The reversal of 20000111201121 is 12110211100002.

It is not a de Polignac number, because 20000111201121 - 2³⁸ = 19725233294177 is a prime.

It is a super-3 number, since 3×20000111201121³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20000111201097 and 20000111201106.

It is not an unprimeable number, because it can be changed into a prime (20000111201131) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 181785690 + ... + 181895676.

It is an arithmetic number, because the mean of its divisors is an integer number (1667267176464).

Almost surely, 2^{20000111201121} is an apocalyptic number.

It is an amenable number.

20000111201121 is a deficient number, since it is larger than the sum of its proper divisors (6676163622303).

20000111201121 is a wasteful number, since it uses less digits than its factorization.

20000111201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130940.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20000111201121 its reverse (12110211100002), we get a palindrome (32110322301123).

The spelling of 20000111201121 in words is "twenty trillion, one hundred eleven million, two hundred one thousand, one hundred twenty-one".