2111123 has 8 divisors (see below), whose sum is σ = 2426880. Its totient is φ = 1798920.

The previous prime is 2111107. The next prime is 2111129. The reversal of 2111123 is 3211112.

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

It is a cyclic number.

It is not a de Polignac number, because 2111123 - 2⁴ = 2111107 is a prime.

It is a super-2 number, since 2×2111123² = 8913680642258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2111129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548 + ... + 2126.

It is an arithmetic number, because the mean of its divisors is an integer number (303360).

2^2111123 is an apocalyptic number.

2111123 is a deficient number, since it is larger than the sum of its proper divisors (315757).

2111123 is a wasteful number, since it uses less digits than its factorization.

2111123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1777.

The product of its digits is 12, while the sum is 11.

The square root of 2111123 is about 1452.9704057551. The cubic root of 2111123 is about 128.2836118548.

Subtracting from 2111123 its sum of digits (11), we obtain a palindrome (2111112).

Adding to 2111123 its reverse (3211112), we get a palindrome (5322235).

It can be divided in two parts, 211112 and 3, that multiplied together give a palindrome (633336).

The spelling of 2111123 in words is "two million, one hundred eleven thousand, one hundred twenty-three".