223212202221 has 32 divisors (see below), whose sum is σ = 307674385920. Its totient is φ = 143853361344.

The previous prime is 223212202219. The next prime is 223212202249. The reversal of 223212202221 is 122202212322.

It is not a de Polignac number, because 223212202221 - 2¹ = 223212202219 is a prime.

It is a super-3 number, since 3×223212202221³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223212202261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13307386 + ... + 13324148.

It is an arithmetic number, because the mean of its divisors is an integer number (9614824560).

Almost surely, 2^223212202221 is an apocalyptic number.

It is an amenable number.

223212202221 is a deficient number, since it is larger than the sum of its proper divisors (84462183699).

223212202221 is a wasteful number, since it uses less digits than its factorization.

223212202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17865.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 223212202221 its reverse (122202212322), we get a palindrome (345414414543).

The spelling of 223212202221 in words is "two hundred twenty-three billion, two hundred twelve million, two hundred two thousand, two hundred twenty-one".