1123230111121 has 4 divisors (see below), whose sum is σ = 1159463340544. Its totient is φ = 1086996881700.

The previous prime is 1123230111089. The next prime is 1123230111137. The reversal of 1123230111121 is 1211110323211.

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.

It is a cyclic number.

It is not a de Polignac number, because 1123230111121 - 2⁵ = 1123230111089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123230211121) 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 3 ways as a sum of consecutive naturals, for example, 18116614665 + ... + 18116614726.

It is an arithmetic number, because the mean of its divisors is an integer number (289865835136).

Almost surely, 2^{1123230111121} is an apocalyptic number.

It is an amenable number.

1123230111121 is a deficient number, since it is larger than the sum of its proper divisors (36233229423).

1123230111121 is an equidigital number, since it uses as much as digits as its factorization.

1123230111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36233229422.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1123230111121 its reverse (1211110323211), we get a palindrome (2334340434332).

It can be divided in two parts, 11232301 and 11121, that multiplied together give a palindrome (124914419421).

The spelling of 1123230111121 in words is "one trillion, one hundred twenty-three billion, two hundred thirty million, one hundred eleven thousand, one hundred twenty-one".