1241221241 has 4 divisors (see below), whose sum is σ = 1336699812. Its totient is φ = 1145742672.

The previous prime is 1241221237. The next prime is 1241221253. The reversal of 1241221241 is 1421221421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 763361641 + 477859600 = 27629^2 + 21860^2 .

It is a cyclic number.

It is not a de Polignac number, because 1241221241 - 2² = 1241221237 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1241221231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47739266 + ... + 47739291.

It is an arithmetic number, because the mean of its divisors is an integer number (334174953).

Almost surely, 2^1241221241 is an apocalyptic number.

It is an amenable number.

1241221241 is a deficient number, since it is larger than the sum of its proper divisors (95478571).

1241221241 is an equidigital number, since it uses as much as digits as its factorization.

1241221241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95478570.

The product of its digits is 256, while the sum is 20.

The square root of 1241221241 is about 35230.9699128480. The cubic root of 1241221241 is about 1074.6896500183.

Adding to 1241221241 its reverse (1421221421), we get a palindrome (2662442662).

The spelling of 1241221241 in words is "one billion, two hundred forty-one million, two hundred twenty-one thousand, two hundred forty-one".