20002001110121 has 4 divisors (see below), whose sum is σ = 20005954861200. Its totient is φ = 19998047359044.

The previous prime is 20002001110087. The next prime is 20002001110129. The reversal of 20002001110121 is 12101110020002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20002001110121 - 2³⁰ = 20000927368297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20002001110129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1976867951 + ... + 1976878068.

It is an arithmetic number, because the mean of its divisors is an integer number (5001488715300).

Almost surely, 2^{20002001110121} is an apocalyptic number.

It is an amenable number.

20002001110121 is a deficient number, since it is larger than the sum of its proper divisors (3953751079).

20002001110121 is an equidigital number, since it uses as much as digits as its factorization.

20002001110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3953751078.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20002001110121 its reverse (12101110020002), we get a palindrome (32103111130123).

The spelling of 20002001110121 in words is "twenty trillion, two billion, one million, one hundred ten thousand, one hundred twenty-one".