223021400221 has 16 divisors (see below), whose sum is σ = 228419654400. Its totient is φ = 217692453888.

The previous prime is 223021400209. The next prime is 223021400257. The reversal of 223021400221 is 122004120322.

223021400221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 223021400221 - 2⁹ = 223021399709 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 (223021400201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7287570 + ... + 7318108.

It is an arithmetic number, because the mean of its divisors is an integer number (14276228400).

Almost surely, 2^223021400221 is an apocalyptic number.

It is an amenable number.

223021400221 is a deficient number, since it is larger than the sum of its proper divisors (5398254179).

223021400221 is an equidigital number, since it uses as much as digits as its factorization.

223021400221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31668.

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

Adding to 223021400221 its reverse (122004120322), we get a palindrome (345025520543).

The spelling of 223021400221 in words is "two hundred twenty-three billion, twenty-one million, four hundred thousand, two hundred twenty-one".