11121312111 has 64 divisors (see below), whose sum is σ = 19024524288. Its totient is φ = 5622110208.

The previous prime is 11121312073. The next prime is 11121312119.

11121312111 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 11121312111 - 2¹¹ = 11121310063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121312119) 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, 668551 + ... + 684983.

It is an arithmetic number, because the mean of its divisors is an integer number (297258192).

Almost surely, 2^11121312111 is an apocalyptic number.

11121312111 is a deficient number, since it is larger than the sum of its proper divisors (7903212177).

11121312111 is a wasteful number, since it uses less digits than its factorization.

11121312111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16560.

The product of its digits is 12, while the sum is 15.

The spelling of 11121312111 in words is "eleven billion, one hundred twenty-one million, three hundred twelve thousand, one hundred eleven".