201111122011011 has 4 divisors (see below), whose sum is σ = 268148162681352. Its totient is φ = 134074081340672.

The previous prime is 201111122010943. The next prime is 201111122011027. The reversal of 201111122011011 is 110110221111102.

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 201111122011011 - 2¹⁷ = 201111121879939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201111122011411) 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, 33518520335166 + ... + 33518520335171.

It is an arithmetic number, because the mean of its divisors is an integer number (67037040670338).

Almost surely, 2^{201111122011011} is an apocalyptic number.

201111122011011 is a deficient number, since it is larger than the sum of its proper divisors (67037040670341).

201111122011011 is an equidigital number, since it uses as much as digits as its factorization.

201111122011011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67037040670340.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 201111122011011 its reverse (110110221111102), we get a palindrome (311221343122113).

The spelling of 201111122011011 in words is "two hundred one trillion, one hundred eleven billion, one hundred twenty-two million, eleven thousand, eleven".