1155520003201 has 4 divisors (see below), whose sum is σ = 1180105535232. Its totient is φ = 1130934471172.

The previous prime is 1155520003153. The next prime is 1155520003213. The reversal of 1155520003201 is 1023000255511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1155520003201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1155520003901) 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 3 ways as a sum of consecutive naturals, for example, 12292765945 + ... + 12292766038.

It is an arithmetic number, because the mean of its divisors is an integer number (295026383808).

Almost surely, 2^{1155520003201} is an apocalyptic number.

It is an amenable number.

1155520003201 is a deficient number, since it is larger than the sum of its proper divisors (24585532031).

1155520003201 is an equidigital number, since it uses as much as digits as its factorization.

1155520003201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24585532030.

The product of its (nonzero) digits is 1500, while the sum is 25.

Adding to 1155520003201 its reverse (1023000255511), we get a palindrome (2178520258712).

The spelling of 1155520003201 in words is "one trillion, one hundred fifty-five billion, five hundred twenty million, three thousand, two hundred one".