1123041111 has 8 divisors (see below), whose sum is σ = 1499502960. Its totient is φ = 747636672.

The previous prime is 1123041103. The next prime is 1123041137. The reversal of 1123041111 is 1111403211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1123041111 - 2³ = 1123041103 is a prime.

It is a super-2 number, since 2×1123041111² = 2522442673992228642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123041181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261870 + ... + 266123.

It is an arithmetic number, because the mean of its divisors is an integer number (187437870).

Almost surely, 2^1123041111 is an apocalyptic number.

1123041111 is a deficient number, since it is larger than the sum of its proper divisors (376461849).

1123041111 is an equidigital number, since it uses as much as digits as its factorization.

1123041111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528705.

The product of its (nonzero) digits is 24, while the sum is 15.

The square root of 1123041111 is about 33511.8055467025. The cubic root of 1123041111 is about 1039.4379084761.

Adding to 1123041111 its reverse (1111403211), we get a palindrome (2234444322).

Subtracting from 1123041111 its reverse (1111403211), we obtain a triangular number (11637900 = T₄₈₂₄).

The spelling of 1123041111 in words is "one billion, one hundred twenty-three million, forty-one thousand, one hundred eleven".