1211113223 has 8 divisors (see below), whose sum is σ = 1218553728. Its totient is φ = 1203691104.

The previous prime is 1211113217. The next prime is 1211113259. The reversal of 1211113223 is 3223111121.

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 1211113223 - 2¹⁶ = 1211047687 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 (1211113823) 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, 141461 + ... + 149777.

It is an arithmetic number, because the mean of its divisors is an integer number (152319216).

Almost surely, 2^1211113223 is an apocalyptic number.

1211113223 is a deficient number, since it is larger than the sum of its proper divisors (7440505).

1211113223 is an equidigital number, since it uses as much as digits as its factorization.

1211113223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9193.

The product of its digits is 72, while the sum is 17.

The square root of 1211113223 is about 34801.0520386956. The cubic root of 1211113223 is about 1065.9289280374.

Adding to 1211113223 its reverse (3223111121), we get a palindrome (4434224344).

The spelling of 1211113223 in words is "one billion, two hundred eleven million, one hundred thirteen thousand, two hundred twenty-three".