201121110020011 has 4 divisors (see below), whose sum is σ = 207608887762624. Its totient is φ = 194633332277400.

The previous prime is 201121110020003. The next prime is 201121110020027. The reversal of 201121110020011 is 110020011121102.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 201121110020011 - 2³ = 201121110020003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201121110019973 and 201121110020000.

It is not an unprimeable number, because it can be changed into a prime (201121110029011) 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, 3243888871260 + ... + 3243888871321.

It is an arithmetic number, because the mean of its divisors is an integer number (51902221940656).

Almost surely, 2^{201121110020011} is an apocalyptic number.

201121110020011 is a deficient number, since it is larger than the sum of its proper divisors (6487777742613).

201121110020011 is an equidigital number, since it uses as much as digits as its factorization.

201121110020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6487777742612.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 201121110020011 its reverse (110020011121102), we get a palindrome (311141121141113).

The spelling of 201121110020011 in words is "two hundred one trillion, one hundred twenty-one billion, one hundred ten million, twenty thousand, eleven".