223501421 has 8 divisors (see below), whose sum is σ = 262575264. Its totient is φ = 187553520.

The previous prime is 223501393. The next prime is 223501441. The reversal of 223501421 is 124105322.

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

It is not a de Polignac number, because 223501421 - 2⁶ = 223501357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223501393 and 223501402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223501441) 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, 781331 + ... + 781616.

It is an arithmetic number, because the mean of its divisors is an integer number (32821908).

Almost surely, 2^223501421 is an apocalyptic number.

It is an amenable number.

223501421 is a deficient number, since it is larger than the sum of its proper divisors (39073843).

223501421 is a wasteful number, since it uses less digits than its factorization.

223501421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1562971.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 223501421 is about 14949.9639129999. The cubic root of 223501421 is about 606.8668705193.

Adding to 223501421 its reverse (124105322), we get a palindrome (347606743).

The spelling of 223501421 in words is "two hundred twenty-three million, five hundred one thousand, four hundred twenty-one".