20111210020201 has 4 divisors (see below), whose sum is σ = 20111671234900. Its totient is φ = 20110748805504.

The previous prime is 20111210020171. The next prime is 20111210020211. The reversal of 20111210020201 is 10202001211102.

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 390905050176 + 19720304970025 = 625224^2 + 4440755^2 .

It is a cyclic number.

It is not a de Polignac number, because 20111210020201 - 2⁷ = 20111210020073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20111210020211) 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, 230541936 + ... + 230629153.

It is an arithmetic number, because the mean of its divisors is an integer number (5027917808725).

Almost surely, 2^{20111210020201} is an apocalyptic number.

It is an amenable number.

20111210020201 is a deficient number, since it is larger than the sum of its proper divisors (461214699).

20111210020201 is an equidigital number, since it uses as much as digits as its factorization.

20111210020201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461214698.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20111210020201 its reverse (10202001211102), we get a palindrome (30313211231303).

The spelling of 20111210020201 in words is "twenty trillion, one hundred eleven billion, two hundred ten million, twenty thousand, two hundred one".