1105000121 has 2 divisors, whose sum is σ = 1105000122. Its totient is φ = 1105000120.

The previous prime is 1105000087. The next prime is 1105000133. The reversal of 1105000121 is 1210005011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 974126521 + 130873600 = 31211^2 + 11440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1105000121 is a prime.

It is not a weakly prime, because it can be changed into another prime (1105002121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552500060 + 552500061.

It is an arithmetic number, because the mean of its divisors is an integer number (552500061).

Almost surely, 2^1105000121 is an apocalyptic number.

It is an amenable number.

1105000121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105000121 is an equidigital number, since it uses as much as digits as its factorization.

1105000121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10, while the sum is 11.

The square root of 1105000121 is about 33241.5420972012. The cubic root of 1105000121 is about 1033.8418501505.

Adding to 1105000121 its reverse (1210005011), we get a palindrome (2315005132).

The spelling of 1105000121 in words is "one billion, one hundred five million, one hundred twenty-one", and thus it is an aban number.