11550120001 has 8 divisors (see below), whose sum is σ = 13205799360. Its totient is φ = 9895856208.

The previous prime is 11550119993. The next prime is 11550120031. The reversal of 11550120001 is 10002105511.

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

It is not a de Polignac number, because 11550120001 - 2³ = 11550119993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11550120031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 336346 + ... + 369091.

It is an arithmetic number, because the mean of its divisors is an integer number (1650724920).

Almost surely, 2^11550120001 is an apocalyptic number.

It is an amenable number.

11550120001 is a deficient number, since it is larger than the sum of its proper divisors (1655679359).

11550120001 is an equidigital number, since it uses as much as digits as its factorization.

11550120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707783.

The product of its (nonzero) digits is 50, while the sum is 16.

Adding to 11550120001 its reverse (10002105511), we get a palindrome (21552225512).

The spelling of 11550120001 in words is "eleven billion, five hundred fifty million, one hundred twenty thousand, one".