123221022321 has 8 divisors (see below), whose sum is σ = 165548854944. Its totient is φ = 81520268960.

The previous prime is 123221022307. The next prime is 123221022329. The reversal of 123221022321 is 123220122321.

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

It is a cyclic number.

It is not a de Polignac number, because 123221022321 - 2⁷ = 123221022193 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (123221022329) 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, 156769356 + ... + 156770141.

It is an arithmetic number, because the mean of its divisors is an integer number (20693606868).

Almost surely, 2^123221022321 is an apocalyptic number.

It is an amenable number.

123221022321 is a deficient number, since it is larger than the sum of its proper divisors (42327832623).

123221022321 is a wasteful number, since it uses less digits than its factorization.

123221022321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313539631.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 123221022321 its reverse (123220122321), we get a palindrome (246441144642).

The spelling of 123221022321 in words is "one hundred twenty-three billion, two hundred twenty-one million, twenty-two thousand, three hundred twenty-one".