1241211801481 has 2 divisors, whose sum is σ = 1241211801482. Its totient is φ = 1241211801480.

The previous prime is 1241211801449. The next prime is 1241211801517. The reversal of 1241211801481 is 1841081121421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1168163225856 + 73048575625 = 1080816^2 + 270275^2 .

It is an emirp because it is prime and its reverse (1841081121421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1241211801481 - 2⁵ = 1241211801449 is a prime.

It is a super-2 number, since 2×1241211801481² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1241211801281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620605900740 + 620605900741.

It is an arithmetic number, because the mean of its divisors is an integer number (620605900741).

Almost surely, 2^{1241211801481} is an apocalyptic number.

It is an amenable number.

1241211801481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241211801481 is an equidigital number, since it uses as much as digits as its factorization.

1241211801481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4096, while the sum is 34.

The spelling of 1241211801481 in words is "one trillion, two hundred forty-one billion, two hundred eleven million, eight hundred one thousand, four hundred eighty-one".