1301111120249 has 2 divisors, whose sum is σ = 1301111120250. Its totient is φ = 1301111120248.

The previous prime is 1301111120189. The next prime is 1301111120251. The reversal of 1301111120249 is 9420211111031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 801325748224 + 499785372025 = 895168^2 + 706955^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1301111120249 is a prime.

Together with 1301111120251, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1301111129249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650555560124 + 650555560125.

It is an arithmetic number, because the mean of its divisors is an integer number (650555560125).

Almost surely, 2^{1301111120249} is an apocalyptic number.

It is an amenable number.

1301111120249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301111120249 is an equidigital number, since it uses as much as digits as its factorization.

1301111120249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 26.

The spelling of 1301111120249 in words is "one trillion, three hundred one billion, one hundred eleven million, one hundred twenty thousand, two hundred forty-nine".