1141121161 has 2 divisors, whose sum is σ = 1141121162. Its totient is φ = 1141121160.

The previous prime is 1141121077. The next prime is 1141121207. The reversal of 1141121161 is 1611211411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1141088400 + 32761 = 33780^2 + 181^2 .

It is a cyclic number.

It is not a de Polignac number, because 1141121161 - 2⁹ = 1141120649 is a prime.

It is not a weakly prime, because it can be changed into another prime (1141121561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570560580 + 570560581.

It is an arithmetic number, because the mean of its divisors is an integer number (570560581).

Almost surely, 2^1141121161 is an apocalyptic number.

It is an amenable number.

1141121161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1141121161 is an equidigital number, since it uses as much as digits as its factorization.

1141121161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48, while the sum is 19.

The square root of 1141121161 is about 33780.4849136302. The cubic root of 1141121161 is about 1044.9862748592.

Adding to 1141121161 its reverse (1611211411), we get a palindrome (2752332572).

The spelling of 1141121161 in words is "one billion, one hundred forty-one million, one hundred twenty-one thousand, one hundred sixty-one".