223213021321 has 8 divisors (see below), whose sum is σ = 225453702240. Its totient is φ = 220975203168.

The previous prime is 223213021303. The next prime is 223213021331. The reversal of 223213021321 is 123120312322.

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 223213021321 - 2²³ = 223204632713 is a prime.

It is a super-3 number, since 3×223213021321³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223213021292 and 223213021301.

It is not an unprimeable number, because it can be changed into a prime (223213021331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 558796 + ... + 871021.

It is an arithmetic number, because the mean of its divisors is an integer number (28181712780).

Almost surely, 2^223213021321 is an apocalyptic number.

It is an amenable number.

223213021321 is a deficient number, since it is larger than the sum of its proper divisors (2240680919).

223213021321 is a wasteful number, since it uses less digits than its factorization.

223213021321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431383.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 223213021321 its reverse (123120312322), we get a palindrome (346333333643).

The spelling of 223213021321 in words is "two hundred twenty-three billion, two hundred thirteen million, twenty-one thousand, three hundred twenty-one".