1113223213 has 4 divisors (see below), whose sum is σ = 1123436380. Its totient is φ = 1103010048.

The previous prime is 1113223201. The next prime is 1113223217. The reversal of 1113223213 is 3123223111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3123223111 = 7001 ⋅446111.

It can be written as a sum of positive squares in 2 ways, for example, as 553096324 + 560126889 = 23518^2 + 23667^2 .

It is a cyclic number.

It is not a de Polignac number, because 1113223213 - 2²⁵ = 1079668781 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 (1113223217) 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, 5106420 + ... + 5106637.

It is an arithmetic number, because the mean of its divisors is an integer number (280859095).

Almost surely, 2^1113223213 is an apocalyptic number.

It is an amenable number.

1113223213 is a deficient number, since it is larger than the sum of its proper divisors (10213167).

1113223213 is a wasteful number, since it uses less digits than its factorization.

1113223213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10213166.

The product of its digits is 216, while the sum is 19.

The square root of 1113223213 is about 33364.9998201708. Note that the first 3 decimals coincide. The cubic root of 1113223213 is about 1036.4000324158.

Adding to 1113223213 its reverse (3123223111), we get a palindrome (4236446324).

The spelling of 1113223213 in words is "one billion, one hundred thirteen million, two hundred twenty-three thousand, two hundred thirteen".