1211230223 has 8 divisors (see below), whose sum is σ = 1387880448. Its totient is φ = 1035484344.

The previous prime is 1211230199. The next prime is 1211230243. The reversal of 1211230223 is 3220321121.

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 1211230223 - 2¹⁰ = 1211229199 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 (1211230243) 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 7 ways as a sum of consecutive naturals, for example, 223211 + ... + 228572.

It is an arithmetic number, because the mean of its divisors is an integer number (173485056).

Almost surely, 2^1211230223 is an apocalyptic number.

1211230223 is a deficient number, since it is larger than the sum of its proper divisors (176650225).

1211230223 is an equidigital number, since it uses as much as digits as its factorization.

1211230223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452173.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1211230223 is about 34802.7329817645. The cubic root of 1211230223 is about 1065.9632517396.

Adding to 1211230223 its reverse (3220321121), we get a palindrome (4431551344).

The spelling of 1211230223 in words is "one billion, two hundred eleven million, two hundred thirty thousand, two hundred twenty-three".