1131303212011 has 16 divisors (see below), whose sum is σ = 1296981434880. Its totient is φ = 966642788160.

The previous prime is 1131303211999. The next prime is 1131303212033. The reversal of 1131303212011 is 1102123031311.

It is not a de Polignac number, because 1131303212011 - 2¹⁷ = 1131303080939 is a prime.

It is a super-2 number, since 2×1131303212011² (a number of 25 digits) contains 22 as substring.

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 1131303212011.

It is not an unprimeable number, because it can be changed into a prime (1131306212011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7100856 + ... + 7258426.

It is an arithmetic number, because the mean of its divisors is an integer number (81061339680).

Almost surely, 2^{1131303212011} is an apocalyptic number.

1131303212011 is a deficient number, since it is larger than the sum of its proper divisors (165678222869).

1131303212011 is a wasteful number, since it uses less digits than its factorization.

1131303212011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160794.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1131303212011 its reverse (1102123031311), we get a palindrome (2233426243322).

The spelling of 1131303212011 in words is "one trillion, one hundred thirty-one billion, three hundred three million, two hundred twelve thousand, eleven".