2011201212111 has 32 divisors (see below), whose sum is σ = 3300846205440. Its totient is φ = 1060720493184.

The previous prime is 2011201212091. The next prime is 2011201212143. The reversal of 2011201212111 is 1112121021102.

It is a happy number.

It is not a de Polignac number, because 2011201212111 - 2⁷ = 2011201211983 is a prime.

It is a super-2 number, since 2×2011201212111² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011201211111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1741060 + ... + 2655878.

It is an arithmetic number, because the mean of its divisors is an integer number (103151443920).

Almost surely, 2^{2011201212111} is an apocalyptic number.

2011201212111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2011201212111 is a deficient number, since it is larger than the sum of its proper divisors (1289644993329).

2011201212111 is a wasteful number, since it uses less digits than its factorization.

2011201212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922895.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2011201212111 its reverse (1112121021102), we get a palindrome (3123322233213).

The spelling of 2011201212111 in words is "two trillion, eleven billion, two hundred one million, two hundred twelve thousand, one hundred eleven".