1120205815697 has 2 divisors, whose sum is σ = 1120205815698. Its totient is φ = 1120205815696.

The previous prime is 1120205815693. The next prime is 1120205815727. The reversal of 1120205815697 is 7965185020211.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1003845690241 + 116360125456 = 1001921^2 + 341116^2 .

It is a cyclic number.

It is not a de Polignac number, because 1120205815697 - 2² = 1120205815693 is a prime.

It is a super-2 number, since 2×1120205815697² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1120205815693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560102907848 + 560102907849.

It is an arithmetic number, because the mean of its divisors is an integer number (560102907849).

Almost surely, 2^{1120205815697} is an apocalyptic number.

It is an amenable number.

1120205815697 is a deficient number, since it is larger than the sum of its proper divisors (1).

1120205815697 is an equidigital number, since it uses as much as digits as its factorization.

1120205815697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 47.

The spelling of 1120205815697 in words is "one trillion, one hundred twenty billion, two hundred five million, eight hundred fifteen thousand, six hundred ninety-seven".