223205327421 has 8 divisors (see below), whose sum is σ = 297961823040. Its totient is φ = 148626191712.

The previous prime is 223205327377. The next prime is 223205327549. The reversal of 223205327421 is 124723502322.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 223205327421 - 2⁶ = 223205327357 is a prime.

It is a super-3 number, since 3×223205327421³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223205327221) 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, 44337040 + ... + 44342073.

It is an arithmetic number, because the mean of its divisors is an integer number (37245227880).

Almost surely, 2^223205327421 is an apocalyptic number.

It is an amenable number.

223205327421 is a deficient number, since it is larger than the sum of its proper divisors (74756495619).

223205327421 is an equidigital number, since it uses as much as digits as its factorization.

223205327421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88679955.

The product of its (nonzero) digits is 40320, while the sum is 33.

Adding to 223205327421 its reverse (124723502322), we get a palindrome (347928829743).

The spelling of 223205327421 in words is "two hundred twenty-three billion, two hundred five million, three hundred twenty-seven thousand, four hundred twenty-one".