1230321121 has 2 divisors, whose sum is σ = 1230321122. Its totient is φ = 1230321120.

The previous prime is 1230321107. The next prime is 1230321133. The reversal of 1230321121 is 1211230321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 856440225 + 373880896 = 29265^2 + 19336^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230321121 - 2⁵ = 1230321089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1230321095 and 1230321104.

It is not a weakly prime, because it can be changed into another prime (1230321821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615160560 + 615160561.

It is an arithmetic number, because the mean of its divisors is an integer number (615160561).

Almost surely, 2^1230321121 is an apocalyptic number.

It is an amenable number.

1230321121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230321121 is an equidigital number, since it uses as much as digits as its factorization.

1230321121 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1230321121 is about 35075.9336440244. The cubic root of 1230321121 is about 1071.5345033912.

Adding to 1230321121 its reverse (1211230321), we get a palindrome (2441551442).

It can be divided in two parts, 1230321 and 121, that multiplied together give a palindrome (148868841).

The spelling of 1230321121 in words is "one billion, two hundred thirty million, three hundred twenty-one thousand, one hundred twenty-one".