11217487801 has 8 divisors (see below), whose sum is σ = 12168551304. Its totient is φ = 10279021440.

The previous prime is 11217487769. The next prime is 11217487829. The reversal of 11217487801 is 10878471211.

It can be written as a sum of positive squares in 4 ways, for example, as 28079401 + 11189408400 = 5299^2 + 105780^2 .

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 11217487801 - 2⁵ = 11217487769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11217487871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3147430 + ... + 3150991.

It is an arithmetic number, because the mean of its divisors is an integer number (1521068913).

Almost surely, 2^11217487801 is an apocalyptic number.

It is an amenable number.

11217487801 is a deficient number, since it is larger than the sum of its proper divisors (951063503).

11217487801 is a wasteful number, since it uses less digits than its factorization.

11217487801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6298571.

The product of its (nonzero) digits is 25088, while the sum is 40.

The spelling of 11217487801 in words is "eleven billion, two hundred seventeen million, four hundred eighty-seven thousand, eight hundred one".