20110010001121 has 4 divisors (see below), whose sum is σ = 20110066657812. Its totient is φ = 20109953344432.

The previous prime is 20110010001031. The next prime is 20110010001157. The reversal of 20110010001121 is 12110001001102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6174429825600 + 13935580175521 = 2484840^2 + 3733039^2 .

It is a cyclic number.

It is not a de Polignac number, because 20110010001121 - 2⁹ = 20110010000609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20110010001098 and 20110010001107.

It is not an unprimeable number, because it can be changed into a prime (20110010091121) 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 3 ways as a sum of consecutive naturals, for example, 27792550 + ... + 28506943.

It is an arithmetic number, because the mean of its divisors is an integer number (5027516664453).

Almost surely, 2^{20110010001121} is an apocalyptic number.

It is an amenable number.

20110010001121 is a deficient number, since it is larger than the sum of its proper divisors (56656691).

20110010001121 is an equidigital number, since it uses as much as digits as its factorization.

20110010001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56656690.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 20110010001121 its reverse (12110001001102), we get a palindrome (32220011002223).

The spelling of 20110010001121 in words is "twenty trillion, one hundred ten billion, ten million, one thousand, one hundred twenty-one".