223212023221 has 16 divisors (see below), whose sum is σ = 258163234560. Its totient is φ = 190735073280.

The previous prime is 223212023219. The next prime is 223212023231. The reversal of 223212023221 is 122320212322.

It is a cyclic number.

It is not a de Polignac number, because 223212023221 - 2¹ = 223212023219 is a prime.

It is a super-3 number, since 3×223212023221³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 223212023192 and 223212023201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223212023231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 632301 + ... + 919906.

It is an arithmetic number, because the mean of its divisors is an integer number (16135202160).

Almost surely, 2^223212023221 is an apocalyptic number.

It is an amenable number.

223212023221 is a deficient number, since it is larger than the sum of its proper divisors (34951211339).

223212023221 is a wasteful number, since it uses less digits than its factorization.

223212023221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553004.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 223212023221 its reverse (122320212322), we get a palindrome (345532235543).

The spelling of 223212023221 in words is "two hundred twenty-three billion, two hundred twelve million, twenty-three thousand, two hundred twenty-one".