1121001101161 has 2 divisors, whose sum is σ = 1121001101162. Its totient is φ = 1121001101160.

The previous prime is 1121001101047. The next prime is 1121001101197. The reversal of 1121001101161 is 1611011001211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 783347134761 + 337653966400 = 885069^2 + 581080^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121001101161 - 2²¹ = 1120999004009 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121001131161) 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, 560500550580 + 560500550581.

It is an arithmetic number, because the mean of its divisors is an integer number (560500550581).

Almost surely, 2^{1121001101161} is an apocalyptic number.

It is an amenable number.

1121001101161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121001101161 is an equidigital number, since it uses as much as digits as its factorization.

1121001101161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 16.

Adding to 1121001101161 its reverse (1611011001211), we get a palindrome (2732012102372).

The spelling of 1121001101161 in words is "one trillion, one hundred twenty-one billion, one million, one hundred one thousand, one hundred sixty-one".