223203132221 has 4 divisors (see below), whose sum is σ = 236332728252. Its totient is φ = 210073536192.

The previous prime is 223203132151. The next prime is 223203132223. The reversal of 223203132221 is 122231302322.

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

It can be written as a sum of positive squares in 2 ways, for example, as 146833809721 + 76369322500 = 383189^2 + 276350^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223203132221 is a prime.

It is a super-3 number, since 3×223203132221³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223203132223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6564797990 + ... + 6564798023.

It is an arithmetic number, because the mean of its divisors is an integer number (59083182063).

Almost surely, 2^223203132221 is an apocalyptic number.

It is an amenable number.

223203132221 is a deficient number, since it is larger than the sum of its proper divisors (13129596031).

223203132221 is a wasteful number, since it uses less digits than its factorization.

223203132221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13129596030.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 223203132221 its reverse (122231302322), we get a palindrome (345434434543).

The spelling of 223203132221 in words is "two hundred twenty-three billion, two hundred three million, one hundred thirty-two thousand, two hundred twenty-one".