1301211797 has 2 divisors, whose sum is σ = 1301211798. Its totient is φ = 1301211796.

The previous prime is 1301211781. The next prime is 1301211799. The reversal of 1301211797 is 7971121031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1277776516 + 23435281 = 35746^2 + 4841^2 .

It is a cyclic number.

It is not a de Polignac number, because 1301211797 - 2⁴ = 1301211781 is a prime.

Together with 1301211799, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1301211799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650605898 + 650605899.

It is an arithmetic number, because the mean of its divisors is an integer number (650605899).

Almost surely, 2^1301211797 is an apocalyptic number.

It is an amenable number.

1301211797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301211797 is an equidigital number, since it uses as much as digits as its factorization.

1301211797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2646, while the sum is 32.

The square root of 1301211797 is about 36072.3134411975. The cubic root of 1301211797 is about 1091.7318922653.

The spelling of 1301211797 in words is "one billion, three hundred one million, two hundred eleven thousand, seven hundred ninety-seven".