1320221012273 has 2 divisors, whose sum is σ = 1320221012274. Its totient is φ = 1320221012272.

The previous prime is 1320221012269. The next prime is 1320221012291. The reversal of 1320221012273 is 3722101220231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1289696379904 + 30524632369 = 1135648^2 + 174713^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320221012273 - 2² = 1320221012269 is a prime.

It is not a weakly prime, because it can be changed into another prime (1320221011273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660110506136 + 660110506137.

It is an arithmetic number, because the mean of its divisors is an integer number (660110506137).

Almost surely, 2^{1320221012273} is an apocalyptic number.

It is an amenable number.

1320221012273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320221012273 is an equidigital number, since it uses as much as digits as its factorization.

1320221012273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 26.

The spelling of 1320221012273 in words is "one trillion, three hundred twenty billion, two hundred twenty-one million, twelve thousand, two hundred seventy-three".