221320123223 has 8 divisors (see below), whose sum is σ = 228967436880. Its totient is φ = 213673848640.

The previous prime is 221320123183. The next prime is 221320123253. The reversal of 221320123223 is 322321023122.

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 221320123223 - 2²² = 221315928919 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 (221320123253) 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, 186611 + ... + 690987.

It is an arithmetic number, because the mean of its divisors is an integer number (28620929610).

Almost surely, 2^221320123223 is an apocalyptic number.

221320123223 is a deficient number, since it is larger than the sum of its proper divisors (7647313657).

221320123223 is a wasteful number, since it uses less digits than its factorization.

221320123223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519537.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 221320123223 its reverse (322321023122), we get a palindrome (543641146345).

The spelling of 221320123223 in words is "two hundred twenty-one billion, three hundred twenty million, one hundred twenty-three thousand, two hundred twenty-three".