2011012112111 has 4 divisors (see below), whose sum is σ = 2030923123224. Its totient is φ = 1991101101000.

The previous prime is 2011012112093. The next prime is 2011012112119. The reversal of 2011012112111 is 1112112101102.

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 2011012112111 - 2³⁰ = 2009938370287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011012112119) 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, 9955505405 + ... + 9955505606.

It is an arithmetic number, because the mean of its divisors is an integer number (507730780806).

Almost surely, 2^{2011012112111} is an apocalyptic number.

2011012112111 is a deficient number, since it is larger than the sum of its proper divisors (19911011113).

2011012112111 is a wasteful number, since it uses less digits than its factorization.

2011012112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19911011112.

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

Adding to 2011012112111 its reverse (1112112101102), we get a palindrome (3123124213213).

The spelling of 2011012112111 in words is "two trillion, eleven billion, twelve million, one hundred twelve thousand, one hundred eleven".