1123122122 has 4 divisors (see below), whose sum is σ = 1684683186. Its totient is φ = 561561060.

The previous prime is 1123122109. The next prime is 1123122127. The reversal of 1123122122 is 2212213211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 853866841 + 269255281 = 29221^2 + 16409^2 .

It is a super-2 number, since 2×1123122122² = 2522806601851565768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1123122122.

It is not an unprimeable number, because it can be changed into a prime (1123122127) 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 as a sum of consecutive naturals, namely, 280780529 + ... + 280780532.

Almost surely, 2^1123122122 is an apocalyptic number.

1123122122 is a deficient number, since it is larger than the sum of its proper divisors (561561064).

1123122122 is an equidigital number, since it uses as much as digits as its factorization.

1123122122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561561063.

The product of its digits is 96, while the sum is 17.

The square root of 1123122122 is about 33513.0142183600. The cubic root of 1123122122 is about 1039.4629012922.

Adding to 1123122122 its reverse (2212213211), we get a palindrome (3335335333).

The spelling of 1123122122 in words is "one billion, one hundred twenty-three million, one hundred twenty-two thousand, one hundred twenty-two".