1123013212 has 12 divisors (see below), whose sum is σ = 1969814896. Its totient is φ = 560208960.

The previous prime is 1123013209. The next prime is 1123013219. The reversal of 1123013212 is 2123103211.

It is a super-2 number, since 2×1123013212² = 2522317348653113888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123013219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322464 + ... + 325927.

Almost surely, 2^1123013212 is an apocalyptic number.

It is an amenable number.

1123013212 is a deficient number, since it is larger than the sum of its proper divisors (846801684).

1123013212 is a wasteful number, since it uses less digits than its factorization.

1123013212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648828 (or 648826 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1123013212 is about 33511.3892878227. The cubic root of 1123013212 is about 1039.4293010387.

Adding to 1123013212 its reverse (2123103211), we get a palindrome (3246116423).

It can be divided in two parts, 11230 and 13212, that added together give a palindrome (24442).

The spelling of 1123013212 in words is "one billion, one hundred twenty-three million, thirteen thousand, two hundred twelve".