1123221023111 has 24 divisors (see below), whose sum is σ = 1282025297280. Its totient is φ = 975873927600.

The previous prime is 1123221023059. The next prime is 1123221023143. The reversal of 1123221023111 is 1113201223211.

It is not a de Polignac number, because 1123221023111 - 2¹⁴ = 1123221006727 is a prime.

It is a super-2 number, since 2×1123221023111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123221023311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6731630 + ... + 6896468.

It is an arithmetic number, because the mean of its divisors is an integer number (53417720720).

Almost surely, 2^{1123221023111} is an apocalyptic number.

1123221023111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1123221023111 is a deficient number, since it is larger than the sum of its proper divisors (158804274169).

1123221023111 is a wasteful number, since it uses less digits than its factorization.

1123221023111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166067 (or 166044 counting only the distinct ones).

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

Adding to 1123221023111 its reverse (1113201223211), we get a palindrome (2236422246322).

The spelling of 1123221023111 in words is "one trillion, one hundred twenty-three billion, two hundred twenty-one million, twenty-three thousand, one hundred eleven".