1117278103621 has 2 divisors, whose sum is σ = 1117278103622. Its totient is φ = 1117278103620.

The previous prime is 1117278103609. The next prime is 1117278103673. The reversal of 1117278103621 is 1263018727111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 615675622500 + 501602481121 = 784650^2 + 708239^2 .

It is an emirp because it is prime and its reverse (1263018727111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1117278103621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1117278109621) 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, 558639051810 + 558639051811.

It is an arithmetic number, because the mean of its divisors is an integer number (558639051811).

Almost surely, 2^{1117278103621} is an apocalyptic number.

It is an amenable number.

1117278103621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1117278103621 is an equidigital number, since it uses as much as digits as its factorization.

1117278103621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 40.

The spelling of 1117278103621 in words is "one trillion, one hundred seventeen billion, two hundred seventy-eight million, one hundred three thousand, six hundred twenty-one".