201211121010011 has 4 divisors (see below), whose sum is σ = 229955566868592. Its totient is φ = 172466675151432.

The previous prime is 201211121010007. The next prime is 201211121010091. The reversal of 201211121010011 is 110010121112102.

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 201211121010011 - 2² = 201211121010007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201211121010001) 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, 14372222929280 + ... + 14372222929293.

It is an arithmetic number, because the mean of its divisors is an integer number (57488891717148).

Almost surely, 2^{201211121010011} is an apocalyptic number.

201211121010011 is a deficient number, since it is larger than the sum of its proper divisors (28744445858581).

201211121010011 is an equidigital number, since it uses as much as digits as its factorization.

201211121010011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28744445858580.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 201211121010011 its reverse (110010121112102), we get a palindrome (311221242122113).

The spelling of 201211121010011 in words is "two hundred one trillion, two hundred eleven billion, one hundred twenty-one million, ten thousand, eleven".