223330643621 has 4 divisors (see below), whose sum is σ = 223377340992. Its totient is φ = 223283946252.

The previous prime is 223330643539. The next prime is 223330643651. The reversal of 223330643621 is 126346033322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 223330643621 - 2²⁶ = 223263534757 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 (223330643651) 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, 23341511 + ... + 23351076.

It is an arithmetic number, because the mean of its divisors is an integer number (55844335248).

Almost surely, 2^223330643621 is an apocalyptic number.

It is an amenable number.

223330643621 is a deficient number, since it is larger than the sum of its proper divisors (46697371).

223330643621 is an equidigital number, since it uses as much as digits as its factorization.

223330643621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46697370.

The product of its (nonzero) digits is 93312, while the sum is 35.

Adding to 223330643621 its reverse (126346033322), we get a palindrome (349676676943).

The spelling of 223330643621 in words is "two hundred twenty-three billion, three hundred thirty million, six hundred forty-three thousand, six hundred twenty-one".