1122123023111 has 4 divisors (see below), whose sum is σ = 1126174009032. Its totient is φ = 1118072037192.

The previous prime is 1122123023081. The next prime is 1122123023113. The reversal of 1122123023111 is 1113203212211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1122123023111 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 (1122123023113) 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, 2025492545 + ... + 2025493098.

It is an arithmetic number, because the mean of its divisors is an integer number (281543502258).

Almost surely, 2^{1122123023111} is an apocalyptic number.

1122123023111 is a deficient number, since it is larger than the sum of its proper divisors (4050985921).

1122123023111 is an equidigital number, since it uses as much as digits as its factorization.

1122123023111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4050985920.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1122123023111 its reverse (1113203212211), we get a palindrome (2235326235322).

The spelling of 1122123023111 in words is "one trillion, one hundred twenty-two billion, one hundred twenty-three million, twenty-three thousand, one hundred eleven".