223303420661 has 16 divisors (see below), whose sum is σ = 237483814464. Its totient is φ = 209241187584.

The previous prime is 223303420649. The next prime is 223303420673. The reversal of 223303420661 is 166024303322.

It is an interprime number because it is at equal distance from previous prime (223303420649) and next prime (223303420673).

It is not a de Polignac number, because 223303420661 - 2¹⁰ = 223303419637 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 (223303420621) 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, 3485231 + ... + 3548723.

It is an arithmetic number, because the mean of its divisors is an integer number (14842738404).

Almost surely, 2^223303420661 is an apocalyptic number.

It is an amenable number.

223303420661 is a deficient number, since it is larger than the sum of its proper divisors (14180393803).

223303420661 is a wasteful number, since it uses less digits than its factorization.

223303420661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64420.

The product of its (nonzero) digits is 31104, while the sum is 32.

Adding to 223303420661 its reverse (166024303322), we get a palindrome (389327723983).

The spelling of 223303420661 in words is "two hundred twenty-three billion, three hundred three million, four hundred twenty thousand, six hundred sixty-one".