223032100221 has 24 divisors (see below), whose sum is σ = 370107638784. Its totient is φ = 126779646240.

The previous prime is 223032100201. The next prime is 223032100351. The reversal of 223032100221 is 122001230322.

223032100221 is a `hidden beast` number, since 2 + 230 + 3 + 210 + 0 + 221 = 666.

It is not a de Polignac number, because 223032100221 - 2¹⁰ = 223032099197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 223032100194 and 223032100203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223032100201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9255486 + ... + 9279551.

It is an arithmetic number, because the mean of its divisors is an integer number (15421151616).

Almost surely, 2^223032100221 is an apocalyptic number.

223032100221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

223032100221 is a deficient number, since it is larger than the sum of its proper divisors (147075538563).

223032100221 is a wasteful number, since it uses less digits than its factorization.

223032100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18535241 (or 18535238 counting only the distinct ones).

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

Adding to 223032100221 its reverse (122001230322), we get a palindrome (345033330543).

The spelling of 223032100221 in words is "two hundred twenty-three billion, thirty-two million, one hundred thousand, two hundred twenty-one".