1345220234291 has 2 divisors, whose sum is σ = 1345220234292. Its totient is φ = 1345220234290.

The previous prime is 1345220234287. The next prime is 1345220234333. The reversal of 1345220234291 is 1924320225431.

It is a weak prime.

It is an emirp because it is prime and its reverse (1924320225431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1345220234291 - 2² = 1345220234287 is a prime.

It is not a weakly prime, because it can be changed into another prime (1345220239291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672610117145 + 672610117146.

It is an arithmetic number, because the mean of its divisors is an integer number (672610117146).

Almost surely, 2^{1345220234291} is an apocalyptic number.

1345220234291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345220234291 is an equidigital number, since it uses as much as digits as its factorization.

1345220234291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 1345220234291 in words is "one trillion, three hundred forty-five billion, two hundred twenty million, two hundred thirty-four thousand, two hundred ninety-one".