1123222011 has 16 divisors (see below), whose sum is σ = 1590454944. Its totient is φ = 702664704.

The previous prime is 1123222003. The next prime is 1123222013. The reversal of 1123222011 is 1102223211.

It is not a de Polignac number, because 1123222011 - 2³ = 1123222003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1123222013) 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, 15490 + ... + 49863.

It is an arithmetic number, because the mean of its divisors is an integer number (99403434).

Almost surely, 2^1123222011 is an apocalyptic number.

1123222011 is a deficient number, since it is larger than the sum of its proper divisors (467232933).

1123222011 is a wasteful number, since it uses less digits than its factorization.

1123222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65710.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1123222011 is about 33514.5044868636. The cubic root of 1123222011 is about 1039.4937165317.

Adding to 1123222011 its reverse (1102223211), we get a palindrome (2225445222).

The spelling of 1123222011 in words is "one billion, one hundred twenty-three million, two hundred twenty-two thousand, eleven".