221121002223 has 128 divisors (see below), whose sum is σ = 370660147200. Its totient is φ = 129141129600.

The previous prime is 221121002197. The next prime is 221121002233. The reversal of 221121002223 is 322200121122.

It is not a de Polignac number, because 221121002223 - 2⁸ = 221121001967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221121002196 and 221121002205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221121002233) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 277441261 + ... + 277442057.

It is an arithmetic number, because the mean of its divisors is an integer number (2895782400).

Almost surely, 2^221121002223 is an apocalyptic number.

221121002223 is a deficient number, since it is larger than the sum of its proper divisors (149539144977).

221121002223 is a wasteful number, since it uses less digits than its factorization.

221121002223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170 (or 1164 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 221121002223 its reverse (322200121122), we get a palindrome (543321123345).

The spelling of 221121002223 in words is "two hundred twenty-one billion, one hundred twenty-one million, two thousand, two hundred twenty-three".