111001121123 has 12 divisors (see below), whose sum is σ = 116289051648. Its totient is φ = 105944438160.

The previous prime is 111001121071. The next prime is 111001121131. The reversal of 111001121123 is 321121100111.

It is not a de Polignac number, because 111001121123 - 2⁶ = 111001121059 is a prime.

It is a super-2 number, since 2×111001121123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111001121098 and 111001121107.

It is not an unprimeable number, because it can be changed into a prime (111001124123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16286 + ... + 471452.

It is an arithmetic number, because the mean of its divisors is an integer number (9690754304).

Almost surely, 2^111001121123 is an apocalyptic number.

111001121123 is a deficient number, since it is larger than the sum of its proper divisors (5287930525).

111001121123 is an equidigital number, since it uses as much as digits as its factorization.

111001121123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455674 (or 455651 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 111001121123 its reverse (321121100111), we get a palindrome (432122221234).

The spelling of 111001121123 in words is "one hundred eleven billion, one million, one hundred twenty-one thousand, one hundred twenty-three".