1121260525161 has 16 divisors (see below), whose sum is σ = 1708611312000. Its totient is φ = 640711358208.

The previous prime is 1121260525141. The next prime is 1121260525201. The reversal of 1121260525161 is 1615250621211.

It is a happy number.

It is not a de Polignac number, because 1121260525161 - 2¹⁹ = 1121260000873 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1121260525141) 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 in 15 ways as a sum of consecutive naturals, for example, 1354065 + ... + 2018913.

It is an arithmetic number, because the mean of its divisors is an integer number (106788207000).

Almost surely, 2^{1121260525161} is an apocalyptic number.

It is an amenable number.

1121260525161 is a deficient number, since it is larger than the sum of its proper divisors (587350786839).

1121260525161 is an equidigital number, since it uses as much as digits as its factorization.

1121260525161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745168.

The product of its (nonzero) digits is 7200, while the sum is 33.

The spelling of 1121260525161 in words is "one trillion, one hundred twenty-one billion, two hundred sixty million, five hundred twenty-five thousand, one hundred sixty-one".