1211104223 has 4 divisors (see below), whose sum is σ = 1384119120. Its totient is φ = 1038089328.

The previous prime is 1211104201. The next prime is 1211104273. The reversal of 1211104223 is 3224011121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3224011121 = 17 ⋅189647713.

It is a cyclic number.

It is not a de Polignac number, because 1211104223 - 2¹⁰ = 1211103199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211104273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86507438 + ... + 86507451.

It is an arithmetic number, because the mean of its divisors is an integer number (346029780).

Almost surely, 2^1211104223 is an apocalyptic number.

1211104223 is a deficient number, since it is larger than the sum of its proper divisors (173014897).

1211104223 is an equidigital number, since it uses as much as digits as its factorization.

1211104223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173014896.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1211104223 is about 34800.9227320196. The cubic root of 1211104223 is about 1065.9262876610.

Adding to 1211104223 its reverse (3224011121), we get a palindrome (4435115344).

The spelling of 1211104223 in words is "one billion, two hundred eleven million, one hundred four thousand, two hundred twenty-three".