11521320001 has 8 divisors (see below), whose sum is σ = 11566525824. Its totient is φ = 11476140720.

The previous prime is 11521319993. The next prime is 11521320017. The reversal of 11521320001 is 10002312511.

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 11521320001 - 2³ = 11521319993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11521320101) 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, 1578306 + ... + 1585588.

It is an arithmetic number, because the mean of its divisors is an integer number (1445815728).

Almost surely, 2^11521320001 is an apocalyptic number.

It is an amenable number.

11521320001 is a deficient number, since it is larger than the sum of its proper divisors (45205823).

11521320001 is an equidigital number, since it uses as much as digits as its factorization.

11521320001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13271.

The product of its (nonzero) digits is 60, while the sum is 16.

Adding to 11521320001 its reverse (10002312511), we get a palindrome (21523632512).

The spelling of 11521320001 in words is "eleven billion, five hundred twenty-one million, three hundred twenty thousand, one".