221223343 has 4 divisors (see below), whose sum is σ = 241334568. Its totient is φ = 201112120.

The previous prime is 221223337. The next prime is 221223349. The reversal of 221223343 is 343322122.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (221223337) and next prime (221223349).

It is not a de Polignac number, because 221223343 - 2⁵ = 221223311 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 (221223349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10055596 + ... + 10055617.

It is an arithmetic number, because the mean of its divisors is an integer number (60333642).

Almost surely, 2^221223343 is an apocalyptic number.

221223343 is a deficient number, since it is larger than the sum of its proper divisors (20111225).

221223343 is a wasteful number, since it uses less digits than its factorization.

221223343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20111224.

The product of its digits is 1728, while the sum is 22.

The square root of 221223343 is about 14873.5786883991. The cubic root of 221223343 is about 604.7979590820.

Adding to 221223343 its reverse (343322122), we get a palindrome (564545465).

The spelling of 221223343 in words is "two hundred twenty-one million, two hundred twenty-three thousand, three hundred forty-three".