1320010121 has 2 divisors, whose sum is σ = 1320010122. Its totient is φ = 1320010120.

The previous prime is 1320010093. The next prime is 1320010141. The reversal of 1320010121 is 1210100231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1042321225 + 277688896 = 32285^2 + 16664^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320010121 - 2²⁶ = 1252901257 is a prime.

It is not a weakly prime, because it can be changed into another prime (1320010141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660005060 + 660005061.

It is an arithmetic number, because the mean of its divisors is an integer number (660005061).

Almost surely, 2^1320010121 is an apocalyptic number.

It is an amenable number.

1320010121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320010121 is an equidigital number, since it uses as much as digits as its factorization.

1320010121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1320010121 is about 36331.9435345812. The cubic root of 1320010121 is about 1096.9641141019.

Adding to 1320010121 its reverse (1210100231), we get a palindrome (2530110352).

The spelling of 1320010121 in words is "one billion, three hundred twenty million, ten thousand, one hundred twenty-one".