1205223122003 has 4 divisors (see below), whose sum is σ = 1230866167200. Its totient is φ = 1179580076808.

The previous prime is 1205223121997. The next prime is 1205223122021. The reversal of 1205223122003 is 3002213225021.

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

It is a cyclic number.

It is not a de Polignac number, because 1205223122003 - 2¹⁶ = 1205223056467 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1205223122003.

It is not an unprimeable number, because it can be changed into a prime (1205223122063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12821522528 + ... + 12821522621.

It is an arithmetic number, because the mean of its divisors is an integer number (307716541800).

Almost surely, 2^{1205223122003} is an apocalyptic number.

1205223122003 is a deficient number, since it is larger than the sum of its proper divisors (25643045197).

1205223122003 is an equidigital number, since it uses as much as digits as its factorization.

1205223122003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25643045196.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 1205223122003 its reverse (3002213225021), we get a palindrome (4207436347024).

The spelling of 1205223122003 in words is "one trillion, two hundred five billion, two hundred twenty-three million, one hundred twenty-two thousand, three".