1232123321 has 8 divisors (see below), whose sum is σ = 1447529664. Its totient is φ = 1033949520.

The previous prime is 1232123309. The next prime is 1232123327. The reversal of 1232123321 is 1233212321.

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 1232123321 - 2²⁶ = 1165014457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1232123293 and 1232123302.

It is not an unprimeable number, because it can be changed into a prime (1232123327) 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, 4307981 + ... + 4308266.

It is an arithmetic number, because the mean of its divisors is an integer number (180941208).

Almost surely, 2^1232123321 is an apocalyptic number.

1232123321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1232123321 is a deficient number, since it is larger than the sum of its proper divisors (215406343).

1232123321 is a wasteful number, since it uses less digits than its factorization.

1232123321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8616271.

The product of its digits is 432, while the sum is 20.

The square root of 1232123321 is about 35101.6142221408. The cubic root of 1232123321 is about 1072.0574501517.

Adding to 1232123321 its reverse (1233212321), we get a palindrome (2465335642).

The spelling of 1232123321 in words is "one billion, two hundred thirty-two million, one hundred twenty-three thousand, three hundred twenty-one".