1320001213 has 2 divisors, whose sum is σ = 1320001214. Its totient is φ = 1320001212.

The previous prime is 1320001201. The next prime is 1320001223. The reversal of 1320001213 is 3121000231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1234679044 + 85322169 = 35138^2 + 9237^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320001213 - 2¹⁷ = 1319870141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1320001193 and 1320001202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320001223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660000606 + 660000607.

It is an arithmetic number, because the mean of its divisors is an integer number (660000607).

Almost surely, 2^1320001213 is an apocalyptic number.

It is an amenable number.

1320001213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320001213 is an equidigital number, since it uses as much as digits as its factorization.

1320001213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1320001213 is about 36331.8209425292. The cubic root of 1320001213 is about 1096.9616465001.

Adding to 1320001213 its reverse (3121000231), we get a palindrome (4441001444).

The spelling of 1320001213 in words is "one billion, three hundred twenty million, one thousand, two hundred thirteen".