1311133203201 has 4 divisors (see below), whose sum is σ = 1748177604272. Its totient is φ = 874088802132.

The previous prime is 1311133203199. The next prime is 1311133203209. The reversal of 1311133203201 is 1023023311131.

It is a happy number.

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 not a de Polignac number, because 1311133203201 - 2¹ = 1311133203199 is a prime.

It is a super-2 number, since 2×1311133203201² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311133203209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218522200531 + ... + 218522200536.

It is an arithmetic number, because the mean of its divisors is an integer number (437044401068).

Almost surely, 2^{1311133203201} is an apocalyptic number.

It is an amenable number.

1311133203201 is a deficient number, since it is larger than the sum of its proper divisors (437044401071).

1311133203201 is an equidigital number, since it uses as much as digits as its factorization.

1311133203201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437044401070.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1311133203201 its reverse (1023023311131), we get a palindrome (2334156514332).

The spelling of 1311133203201 in words is "one trillion, three hundred eleven billion, one hundred thirty-three million, two hundred three thousand, two hundred one".