1300612121 has 2 divisors, whose sum is σ = 1300612122. Its totient is φ = 1300612120.

The previous prime is 1300612067. The next prime is 1300612129. The reversal of 1300612121 is 1212160031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1300612096 + 25 = 36064^2 + 5^2 .

It is an emirp because it is prime and its reverse (1212160031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1300612121 - 2¹⁰ = 1300611097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1300612121.

It is not a weakly prime, because it can be changed into another prime (1300612129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650306060 + 650306061.

It is an arithmetic number, because the mean of its divisors is an integer number (650306061).

Almost surely, 2^1300612121 is an apocalyptic number.

It is an amenable number.

1300612121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1300612121 is an equidigital number, since it uses as much as digits as its factorization.

1300612121 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 17.

The square root of 1300612121 is about 36064.0003466060. Note that the first 3 decimals coincide. The cubic root of 1300612121 is about 1091.5641547726.

Adding to 1300612121 its reverse (1212160031), we get a palindrome (2512772152).

The spelling of 1300612121 in words is "one billion, three hundred million, six hundred twelve thousand, one hundred twenty-one".