201111020111211 has 64 divisors (see below), whose sum is σ = 326169037209600. Its totient is φ = 107665152898176.

The previous prime is 201111020111207. The next prime is 201111020111237. The reversal of 201111020111211 is 112111020111102.

It is not a de Polignac number, because 201111020111211 - 2² = 201111020111207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201111020131211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26145705 + ... + 32951781.

It is an arithmetic number, because the mean of its divisors is an integer number (5096391206400).

Almost surely, 2^{201111020111211} is an apocalyptic number.

201111020111211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

201111020111211 is a deficient number, since it is larger than the sum of its proper divisors (125058017098389).

201111020111211 is a wasteful number, since it uses less digits than its factorization.

201111020111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6806928.

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

Adding to 201111020111211 its reverse (112111020111102), we get a palindrome (313222040222313).

The spelling of 201111020111211 in words is "two hundred one trillion, one hundred eleven billion, twenty million, one hundred eleven thousand, two hundred eleven".