1223203122 has 48 divisors (see below), whose sum is σ = 2768926680. Its totient is φ = 389760000.

The previous prime is 1223203103. The next prime is 1223203139. The reversal of 1223203122 is 2213023221.

It can be written as a sum of positive squares in 4 ways, for example, as 1186733601 + 36469521 = 34449^2 + 6039^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1223203095 and 1223203104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41122 + ... + 64322.

Almost surely, 2^1223203122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223203122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1384463340).

1223203122 is an abundant number, since it is smaller than the sum of its proper divisors (1545723558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223203122 is a wasteful number, since it uses less digits than its factorization.

1223203122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23339 (or 23336 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1223203122 is about 34974.3208940503. The cubic root of 1223203122 is about 1069.4640580352.

Adding to 1223203122 its reverse (2213023221), we get a palindrome (3436226343).

The spelling of 1223203122 in words is "one billion, two hundred twenty-three million, two hundred three thousand, one hundred twenty-two".