1101123 has 6 divisors (see below), whose sum is σ = 1590524. Its totient is φ = 734076.

The previous prime is 1101109. The next prime is 1101127. The reversal of 1101123 is 3211011.

It is not a de Polignac number, because 1101123 - 2⁵ = 1101091 is a prime.

It is a super-2 number, since 2×1101123² = 2424943722258, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 122347 = 1101123 / (1 + 1 + 0 + 1 + 1 + 2 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1101127) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61165 + ... + 61182.

2^1101123 is an apocalyptic number.

1101123 is a deficient number, since it is larger than the sum of its proper divisors (489401).

1101123 is a wasteful number, since it uses less digits than its factorization.

1101123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122353 (or 122350 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1101123 is about 1049.3440808429. The cubic root of 1101123 is about 103.2631284031.

Adding to 1101123 its reverse (3211011), we get a palindrome (4312134).

It can be divided in two parts, 1 and 101123, that added together give a square (101124 = 318²).

The spelling of 1101123 in words is "one million, one hundred one thousand, one hundred twenty-three".