111110011121 has 4 divisors (see below), whose sum is σ = 113693964912. Its totient is φ = 108526057332.

The previous prime is 111110011087. The next prime is 111110011141. The reversal of 111110011121 is 121110011111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121110011111 = 23 ⋅5265652657.

It is a cyclic number.

It is not a de Polignac number, because 111110011121 - 2⁶ = 111110011057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111110011141) 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, 1291976831 + ... + 1291976916.

It is an arithmetic number, because the mean of its divisors is an integer number (28423491228).

Almost surely, 2^111110011121 is an apocalyptic number.

It is an amenable number.

111110011121 is a deficient number, since it is larger than the sum of its proper divisors (2583953791).

111110011121 is an equidigital number, since it uses as much as digits as its factorization.

111110011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2583953790.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 111110011121 its reverse (121110011111), we get a palindrome (232220022232).

The spelling of 111110011121 in words is "one hundred eleven billion, one hundred ten million, eleven thousand, one hundred twenty-one".