223021112221 has 16 divisors (see below), whose sum is σ = 225808547328. Its totient is φ = 220253774400.

The previous prime is 223021112173. The next prime is 223021112261. The reversal of 223021112221 is 122211120322.

It is a cyclic number.

It is not a de Polignac number, because 223021112221 - 2¹⁵ = 223021079453 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 (223021112261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31027590 + ... + 31034776.

It is an arithmetic number, because the mean of its divisors is an integer number (14113034208).

Almost surely, 2^223021112221 is an apocalyptic number.

It is an amenable number.

223021112221 is a deficient number, since it is larger than the sum of its proper divisors (2787435107).

223021112221 is a wasteful number, since it uses less digits than its factorization.

223021112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8532.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 223021112221 its reverse (122211120322), we get a palindrome (345232232543).

The spelling of 223021112221 in words is "two hundred twenty-three billion, twenty-one million, one hundred twelve thousand, two hundred twenty-one".