111121000121111 has 4 divisors (see below), whose sum is σ = 111147090991800. Its totient is φ = 111094909250424.

The previous prime is 111121000121081. The next prime is 111121000121137.

111121000121111 is nontrivially palindromic in base 10.

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 111121000121111 - 2³⁴ = 111103820251927 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 (111121030121111) 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, 13045428956 + ... + 13045437473.

It is an arithmetic number, because the mean of its divisors is an integer number (27786772747950).

Almost surely, 2^{111121000121111} is an apocalyptic number.

111121000121111 is a deficient number, since it is larger than the sum of its proper divisors (26090870689).

111121000121111 is an equidigital number, since it uses as much as digits as its factorization.

111121000121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26090870688.

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

It can be divided in two parts, 111121000 and 121111, that added together give a palindrome (111242111).

The spelling of 111121000121111 in words is "one hundred eleven trillion, one hundred twenty-one billion, one hundred twenty-one thousand, one hundred eleven".