11205550001 has 8 divisors (see below), whose sum is σ = 11408686464. Its totient is φ = 11003040720.

The previous prime is 11205549959. The next prime is 11205550019. The reversal of 11205550001 is 10005550211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11205550001 - 2¹⁴ = 11205533617 is a prime.

It is a super-2 number, since 2×11205550001² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11201550001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120665 + ... + 192278.

It is an arithmetic number, because the mean of its divisors is an integer number (1426085808).

Almost surely, 2^11205550001 is an apocalyptic number.

It is an amenable number.

11205550001 is a deficient number, since it is larger than the sum of its proper divisors (203136463).

11205550001 is an equidigital number, since it uses as much as digits as its factorization.

11205550001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313591.

The product of its (nonzero) digits is 250, while the sum is 20.

The spelling of 11205550001 in words is "eleven billion, two hundred five million, five hundred fifty thousand, one".