1123223223212 has 144 divisors (see below), whose sum is σ = 2153259551520. Its totient is φ = 511160832000.

The previous prime is 1123223223167. The next prime is 1123223223223. The reversal of 1123223223212 is 2123223223211.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2436492662 + ... + 2436493122.

It is an arithmetic number, because the mean of its divisors is an integer number (14953191330).

Almost surely, 2^{1123223223212} is an apocalyptic number.

It is an amenable number.

1123223223212 is a deficient number, since it is larger than the sum of its proper divisors (1030036328308).

1123223223212 is a wasteful number, since it uses less digits than its factorization.

1123223223212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804 (or 749 counting only the distinct ones).

The product of its digits is 3456, while the sum is 26.

Adding to 1123223223212 its reverse (2123223223211), we get a palindrome (3246446446423).

Subtracting 1123223223212 from its reverse (2123223223211), we obtain a palindrome (999999999999).

The spelling of 1123223223212 in words is "one trillion, one hundred twenty-three billion, two hundred twenty-three million, two hundred twenty-three thousand, two hundred twelve".