111000211121111 has 16 divisors (see below), whose sum is σ = 119630845192320. Its totient is φ = 102382759791840.

The previous prime is 111000211120891. The next prime is 111000211121131. The reversal of 111000211121111 is 111121112000111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111000211121111 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 (111000211121131) 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 15 ways as a sum of consecutive naturals, for example, 153281000 + ... + 154003458.

It is an arithmetic number, because the mean of its divisors is an integer number (7476927824520).

Almost surely, 2^{111000211121111} is an apocalyptic number.

111000211121111 is a deficient number, since it is larger than the sum of its proper divisors (8630634071209).

111000211121111 is a wasteful number, since it uses less digits than its factorization.

111000211121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731566.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 111000211121111 its reverse (111121112000111), we get a palindrome (222121323121222).

The spelling of 111000211121111 in words is "one hundred eleven trillion, two hundred eleven million, one hundred twenty-one thousand, one hundred eleven".