1232321121 has 20 divisors (see below), whose sum is σ = 1841908464. Its totient is φ = 821086200.

The previous prime is 1232321119. The next prime is 1232321137. The reversal of 1232321121 is 1211232321.

It is not a de Polignac number, because 1232321121 - 2¹ = 1232321119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1232321094 and 1232321103.

It is not an unprimeable number, because it can be changed into a prime (1232323121) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 202006 + ... + 208016.

Almost surely, 2^1232321121 is an apocalyptic number.

It is an amenable number.

1232321121 is a deficient number, since it is larger than the sum of its proper divisors (609587343).

1232321121 is an equidigital number, since it uses as much as digits as its factorization.

1232321121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8554 (or 8545 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1232321121 is about 35104.4316433125. The cubic root of 1232321121 is about 1072.1148149770.

Adding to 1232321121 its reverse (1211232321), we get a palindrome (2443553442).

The spelling of 1232321121 in words is "one billion, two hundred thirty-two million, three hundred twenty-one thousand, one hundred twenty-one".