423221033443021 has 16 divisors (see below), whose sum is σ = 488875785016320. Its totient is φ = 362098295303680.

The previous prime is 423221033443001. The next prime is 423221033443037. The reversal of 423221033443021 is 120344330122324.

It is a cyclic number.

It is not a de Polignac number, because 423221033443021 - 2⁵ = 423221033442989 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 (423221033443001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45612781 + ... + 54101458.

It is an arithmetic number, because the mean of its divisors is an integer number (30554736563520).

Almost surely, 2^{423221033443021} is an apocalyptic number.

It is an amenable number.

423221033443021 is a deficient number, since it is larger than the sum of its proper divisors (65654751573299).

423221033443021 is a wasteful number, since it uses less digits than its factorization.

423221033443021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99736964.

The product of its (nonzero) digits is 82944, while the sum is 34.

Adding to 423221033443021 its reverse (120344330122324), we get a palindrome (543565363565345).

The spelling of 423221033443021 in words is "four hundred twenty-three trillion, two hundred twenty-one billion, thirty-three million, four hundred forty-three thousand, twenty-one".