223344021 has 8 divisors (see below), whose sum is σ = 304717600. Its totient is φ = 145433232.

The previous prime is 223344013. The next prime is 223344029. The reversal of 223344021 is 120443322.

It is an interprime number because it is at equal distance from previous prime (223344013) and next prime (223344029).

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

It is not a de Polignac number, because 223344021 - 2³ = 223344013 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 (223344029) 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, 865546 + ... + 865803.

It is an arithmetic number, because the mean of its divisors is an integer number (38089700).

Almost surely, 2^223344021 is an apocalyptic number.

It is an amenable number.

223344021 is a deficient number, since it is larger than the sum of its proper divisors (81373579).

223344021 is a wasteful number, since it uses less digits than its factorization.

223344021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731395.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 223344021 is about 14944.6987590918. The cubic root of 223344021 is about 606.7243758584.

Adding to 223344021 its reverse (120443322), we get a palindrome (343787343).

The spelling of 223344021 in words is "two hundred twenty-three million, three hundred forty-four thousand, twenty-one".