1131203222011 has 8 divisors (see below), whose sum is σ = 1132764752880. Its totient is φ = 1129642432512.

The previous prime is 1131203221997. The next prime is 1131203222057. The reversal of 1131203222011 is 1102223021311.

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 1131203222011 - 2⁵ = 1131203221979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1131203222011.

It is not an unprimeable number, because it can be changed into a prime (1131203222081) 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, 2903851 + ... + 3270283.

It is an arithmetic number, because the mean of its divisors is an integer number (141595594110).

Almost surely, 2^{1131203222011} is an apocalyptic number.

1131203222011 is a deficient number, since it is larger than the sum of its proper divisors (1561530869).

1131203222011 is an equidigital number, since it uses as much as digits as its factorization.

1131203222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370685.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1131203222011 its reverse (1102223021311), we get a palindrome (2233426243322).

The spelling of 1131203222011 in words is "one trillion, one hundred thirty-one billion, two hundred three million, two hundred twenty-two thousand, eleven".