1123221412 has 6 divisors (see below), whose sum is σ = 1965637478. Its totient is φ = 561610704.

The previous prime is 1123221403. The next prime is 1123221443. The reversal of 1123221412 is 2141223211.

It can be written as a sum of positive squares in only one way, i.e., 920272896 + 202948516 = 30336^2 + 14246^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1123221412.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140402673 + ... + 140402680.

Almost surely, 2^1123221412 is an apocalyptic number.

It is an amenable number.

1123221412 is a deficient number, since it is larger than the sum of its proper divisors (842416066).

1123221412 is a wasteful number, since it uses less digits than its factorization.

1123221412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280805357 (or 280805355 counting only the distinct ones).

The product of its digits is 192, while the sum is 19.

The square root of 1123221412 is about 33514.4955504331. The cubic root of 1123221412 is about 1039.4935317488.

Adding to 1123221412 its reverse (2141223211), we get a palindrome (3264444623).

The spelling of 1123221412 in words is "one billion, one hundred twenty-three million, two hundred twenty-one thousand, four hundred twelve".