241221351443381 has 2 divisors, whose sum is σ = 241221351443382. Its totient is φ = 241221351443380.

The previous prime is 241221351443311. The next prime is 241221351443417. The reversal of 241221351443381 is 183344153122142.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 176315109856900 + 64906241586481 = 13278370^2 + 8056441^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-241221351443381 is a prime.

It is a super-2 number, since 2×241221351443381² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (241221351443311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120610675721690 + 120610675721691.

It is an arithmetic number, because the mean of its divisors is an integer number (120610675721691).

Almost surely, 2^{241221351443381} is an apocalyptic number.

It is an amenable number.

241221351443381 is a deficient number, since it is larger than the sum of its proper divisors (1).

241221351443381 is an equidigital number, since it uses as much as digits as its factorization.

241221351443381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 552960, while the sum is 44.

The spelling of 241221351443381 in words is "two hundred forty-one trillion, two hundred twenty-one billion, three hundred fifty-one million, four hundred forty-three thousand, three hundred eighty-one".