201211100020011 has 48 divisors (see below), whose sum is σ = 273469243197696. Its totient is φ = 131583540845952.

The previous prime is 201211100020001. The next prime is 201211100020027. The reversal of 201211100020011 is 110020001112102.

It is not a de Polignac number, because 201211100020011 - 2⁹ = 201211100019499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201211100020001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22625779881 + ... + 22625788773.

It is an arithmetic number, because the mean of its divisors is an integer number (5697275899952).

Almost surely, 2^{201211100020011} is an apocalyptic number.

201211100020011 is a deficient number, since it is larger than the sum of its proper divisors (72258143177685).

201211100020011 is a wasteful number, since it uses less digits than its factorization.

201211100020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15380 (or 15271 counting only the distinct ones).

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

Adding to 201211100020011 its reverse (110020001112102), we get a palindrome (311231101132113).

The spelling of 201211100020011 in words is "two hundred one trillion, two hundred eleven billion, one hundred million, twenty thousand, eleven".