1211123 has 4 divisors (see below), whose sum is σ = 1213800. Its totient is φ = 1208448.

The previous prime is 1211087. The next prime is 1211141. The reversal of 1211123 is 3211121.

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

It is a cyclic number.

It is not a de Polignac number, because 1211123 - 2⁶ = 1211059 is a prime.

It is a super-2 number, since 2×1211123² = 2933637842258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473 + ... + 1626.

It is an arithmetic number, because the mean of its divisors is an integer number (303450).

2^1211123 is an apocalyptic number.

1211123 is a deficient number, since it is larger than the sum of its proper divisors (2677).

1211123 is an equidigital number, since it uses as much as digits as its factorization.

1211123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2676.

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

The square root of 1211123 is about 1100.5103361623. The cubic root of 1211123 is about 106.5931796351.

Adding to 1211123 its reverse (3211121), we get a palindrome (4422244).

The spelling of 1211123 in words is "one million, two hundred eleven thousand, one hundred twenty-three".