1241112121 has 2 divisors, whose sum is σ = 1241112122. Its totient is φ = 1241112120.

The previous prime is 1241112097. The next prime is 1241112143. The reversal of 1241112121 is 1212111421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 665640000 + 575472121 = 25800^2 + 23989^2 .

It is a cyclic number.

It is not a de Polignac number, because 1241112121 - 2¹⁵ = 1241079353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1241112095 and 1241112104.

It is not a weakly prime, because it can be changed into another prime (1241112721) 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, 620556060 + 620556061.

It is an arithmetic number, because the mean of its divisors is an integer number (620556061).

Almost surely, 2^1241112121 is an apocalyptic number.

It is an amenable number.

1241112121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241112121 is an equidigital number, since it uses as much as digits as its factorization.

1241112121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32, while the sum is 16.

The square root of 1241112121 is about 35229.4212413432. The cubic root of 1241112121 is about 1074.6581558824.

Adding to 1241112121 its reverse (1212111421), we get a palindrome (2453223542).

The spelling of 1241112121 in words is "one billion, two hundred forty-one million, one hundred twelve thousand, one hundred twenty-one".