1099997368501 has 2 divisors, whose sum is σ = 1099997368502. Its totient is φ = 1099997368500.

The previous prime is 1099997368471. The next prime is 1099997368513. The reversal of 1099997368501 is 1058637999901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1094398438225 + 5598930276 = 1046135^2 + 74826^2 .

It is an emirp because it is prime and its reverse (1058637999901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1099997368501 - 2¹⁵ = 1099997335733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1099997368541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549998684250 + 549998684251.

It is an arithmetic number, because the mean of its divisors is an integer number (549998684251).

Almost surely, 2^{1099997368501} is an apocalyptic number.

It is an amenable number.

1099997368501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1099997368501 is an equidigital number, since it uses as much as digits as its factorization.

1099997368501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33067440, while the sum is 67.

The spelling of 1099997368501 in words is "one trillion, ninety-nine billion, nine hundred ninety-seven million, three hundred sixty-eight thousand, five hundred one".