1121222243 has 16 divisors (see below), whose sum is σ = 1190112000. Its totient is φ = 1053365472.

The previous prime is 1121222237. The next prime is 1121222269. The reversal of 1121222243 is 3422221211.

It is not a de Polignac number, because 1121222243 - 2⁴ = 1121222227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121222213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1909796 + ... + 1910382.

It is an arithmetic number, because the mean of its divisors is an integer number (74382000).

Almost surely, 2^1121222243 is an apocalyptic number.

1121222243 is a deficient number, since it is larger than the sum of its proper divisors (68889757).

1121222243 is a wasteful number, since it uses less digits than its factorization.

1121222243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274.

The product of its digits is 384, while the sum is 20.

The square root of 1121222243 is about 33484.6568296586. The cubic root of 1121222243 is about 1038.8764502720.

Adding to 1121222243 its reverse (3422221211), we get a palindrome (4543443454).

The spelling of 1121222243 in words is "one billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred forty-three".