1101240203409 has 6 divisors (see below), whose sum is σ = 1590680293826. Its totient is φ = 734160135600.

The previous prime is 1101240203377. The next prime is 1101240203467. The reversal of 1101240203409 is 9043020421011.

It is a happy number.

1101240203409 is a `hidden beast` number, since 1 + 1 + 0 + 12 + 40 + 203 + 409 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1083056490000 + 18183713409 = 1040700^2 + 134847^2 .

It is not a de Polignac number, because 1101240203409 - 2⁵ = 1101240203377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1101240203489) 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 in 5 ways as a sum of consecutive naturals, for example, 61180011292 + ... + 61180011309.

Almost surely, 2^{1101240203409} is an apocalyptic number.

It is an amenable number.

1101240203409 is a deficient number, since it is larger than the sum of its proper divisors (489440090417).

1101240203409 is a wasteful number, since it uses less digits than its factorization.

1101240203409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122360022607 (or 122360022604 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The spelling of 1101240203409 in words is "one trillion, one hundred one billion, two hundred forty million, two hundred three thousand, four hundred nine".