1123210321 has 8 divisors (see below), whose sum is σ = 1161353984. Its totient is φ = 1085186160.

The previous prime is 1123210279. The next prime is 1123210337. The reversal of 1123210321 is 1230123211.

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 1123210321 - 2⁹ = 1123209809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1123210295 and 1123210304.

It is not an unprimeable number, because it can be changed into a prime (1123210381) 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, 10551 + ... + 48556.

It is an arithmetic number, because the mean of its divisors is an integer number (145169248).

Almost surely, 2^1123210321 is an apocalyptic number.

It is an amenable number.

1123210321 is a deficient number, since it is larger than the sum of its proper divisors (38143663).

1123210321 is an equidigital number, since it uses as much as digits as its factorization.

1123210321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59751.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1123210321 is about 33514.3300843087. The cubic root of 1123210321 is about 1039.4901103216.

Adding to 1123210321 its reverse (1230123211), we get a palindrome (2353333532).

The spelling of 1123210321 in words is "one billion, one hundred twenty-three million, two hundred ten thousand, three hundred twenty-one".