1241340424021 has 2 divisors, whose sum is σ = 1241340424022. Its totient is φ = 1241340424020.

The previous prime is 1241340424019. The next prime is 1241340424081. The reversal of 1241340424021 is 1204240431421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1044302091921 + 197038332100 = 1021911^2 + 443890^2 .

It is a cyclic number.

It is not a de Polignac number, because 1241340424021 - 2¹ = 1241340424019 is a prime.

Together with 1241340424019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1241340424081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620670212010 + 620670212011.

It is an arithmetic number, because the mean of its divisors is an integer number (620670212011).

Almost surely, 2^{1241340424021} is an apocalyptic number.

It is an amenable number.

1241340424021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241340424021 is an equidigital number, since it uses as much as digits as its factorization.

1241340424021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 1241340424021 its reverse (1204240431421), we get a palindrome (2445580855442).

The spelling of 1241340424021 in words is "one trillion, two hundred forty-one billion, three hundred forty million, four hundred twenty-four thousand, twenty-one".