223020212221 has 8 divisors (see below), whose sum is σ = 236973466944. Its totient is φ = 209159670720.

The previous prime is 223020212203. The next prime is 223020212227. The reversal of 223020212221 is 122212020322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 223020212221 - 2⁵ = 223020212189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223020212227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23173345 + ... + 23182966.

It is an arithmetic number, because the mean of its divisors is an integer number (29621683368).

Almost surely, 2^223020212221 is an apocalyptic number.

It is an amenable number.

223020212221 is a deficient number, since it is larger than the sum of its proper divisors (13953254723).

223020212221 is a wasteful number, since it uses less digits than its factorization.

223020212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46356611.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 223020212221 its reverse (122212020322), we get a palindrome (345232232543).

The spelling of 223020212221 in words is "two hundred twenty-three billion, twenty million, two hundred twelve thousand, two hundred twenty-one".