1240221221341 has 2 divisors, whose sum is σ = 1240221221342. Its totient is φ = 1240221221340.

The previous prime is 1240221221311. The next prime is 1240221221431. The reversal of 1240221221341 is 1431221220421.

Together with next prime (1240221221431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 772131264100 + 468089957241 = 878710^2 + 684171^2 .

It is a cyclic number.

It is not a de Polignac number, because 1240221221341 - 2³³ = 1231631286749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240221221311) 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 as a sum of consecutive naturals, namely, 620110610670 + 620110610671.

It is an arithmetic number, because the mean of its divisors is an integer number (620110610671).

Almost surely, 2^{1240221221341} is an apocalyptic number.

It is an amenable number.

1240221221341 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240221221341 is an equidigital number, since it uses as much as digits as its factorization.

1240221221341 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 1240221221341 its reverse (1431221220421), we get a palindrome (2671442441762).

The spelling of 1240221221341 in words is "one trillion, two hundred forty billion, two hundred twenty-one million, two hundred twenty-one thousand, three hundred forty-one".