201123321003 has 80 divisors (see below), whose sum is σ = 336572728800. Its totient is φ = 118655539200.

The previous prime is 201123320971. The next prime is 201123321101. The reversal of 201123321003 is 300123321102.

It is not a de Polignac number, because 201123321003 - 2⁵ = 201123320971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201123321703) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 5252973 + ... + 5291121.

It is an arithmetic number, because the mean of its divisors is an integer number (4207159110).

Almost surely, 2^201123321003 is an apocalyptic number.

201123321003 is a deficient number, since it is larger than the sum of its proper divisors (135449407797).

201123321003 is a wasteful number, since it uses less digits than its factorization.

201123321003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38330 (or 38321 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 201123321003 its reverse (300123321102), we get a palindrome (501246642105).

Subtracting 201123321003 from its reverse (300123321102), we obtain a palindrome (99000000099).

The spelling of 201123321003 in words is "two hundred one billion, one hundred twenty-three million, three hundred twenty-one thousand, three".