1105131240121 has 2 divisors, whose sum is σ = 1105131240122. Its totient is φ = 1105131240120.

The previous prime is 1105131240097. The next prime is 1105131240139. The reversal of 1105131240121 is 1210421315011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 696497070096 + 408634170025 = 834564^2 + 639245^2 .

It is a cyclic number.

It is not a de Polignac number, because 1105131240121 - 2¹¹ = 1105131238073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1105131240092 and 1105131240101.

It is not a weakly prime, because it can be changed into another prime (1105131249121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552565620060 + 552565620061.

It is an arithmetic number, because the mean of its divisors is an integer number (552565620061).

Almost surely, 2^{1105131240121} is an apocalyptic number.

It is an amenable number.

1105131240121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105131240121 is an equidigital number, since it uses as much as digits as its factorization.

1105131240121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 22.

Adding to 1105131240121 its reverse (1210421315011), we get a palindrome (2315552555132).

The spelling of 1105131240121 in words is "one trillion, one hundred five billion, one hundred thirty-one million, two hundred forty thousand, one hundred twenty-one".