121223122321 has 8 divisors (see below), whose sum is σ = 138546208064. Its totient is φ = 103901410800.

The previous prime is 121223122291. The next prime is 121223122373. The reversal of 121223122321 is 123221322121.

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 121223122321 - 2⁷ = 121223122193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121223122292 and 121223122301.

It is not an unprimeable number, because it can be changed into a prime (121223122721) 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, 147030 + ... + 513871.

It is an arithmetic number, because the mean of its divisors is an integer number (17318276008).

Almost surely, 2^121223122321 is an apocalyptic number.

It is an amenable number.

121223122321 is a deficient number, since it is larger than the sum of its proper divisors (17323085743).

121223122321 is an equidigital number, since it uses as much as digits as its factorization.

121223122321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687111.

The product of its digits is 576, while the sum is 22.

Adding to 121223122321 its reverse (123221322121), we get a palindrome (244444444442).

The spelling of 121223122321 in words is "one hundred twenty-one billion, two hundred twenty-three million, one hundred twenty-two thousand, three hundred twenty-one".