221123321203 has 16 divisors (see below), whose sum is σ = 233163853600. Its totient is φ = 209123389440.

The previous prime is 221123321173. The next prime is 221123321227. The reversal of 221123321203 is 302123321122.

It is a cyclic number.

It is not a de Polignac number, because 221123321203 - 2³⁷ = 83684367731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221123321273) 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, 30249913 + ... + 30257221.

It is an arithmetic number, because the mean of its divisors is an integer number (14572740850).

Almost surely, 2^221123321203 is an apocalyptic number.

221123321203 is a deficient number, since it is larger than the sum of its proper divisors (12040532397).

221123321203 is a wasteful number, since it uses less digits than its factorization.

221123321203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9862.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 221123321203 its reverse (302123321122), we get a palindrome (523246642325).

The spelling of 221123321203 in words is "two hundred twenty-one billion, one hundred twenty-three million, three hundred twenty-one thousand, two hundred three".