1131222240011 has 4 divisors (see below), whose sum is σ = 1132074707232. Its totient is φ = 1130369772792.

The previous prime is 1131222240007. The next prime is 1131222240017. The reversal of 1131222240011 is 1100422221311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1131222240011 - 2² = 1131222240007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131222240017) 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, 426231620 + ... + 426234273.

It is an arithmetic number, because the mean of its divisors is an integer number (283018676808).

Almost surely, 2^{1131222240011} is an apocalyptic number.

1131222240011 is a deficient number, since it is larger than the sum of its proper divisors (852467221).

1131222240011 is an equidigital number, since it uses as much as digits as its factorization.

1131222240011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852467220.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 1131222240011 its reverse (1100422221311), we get a palindrome (2231644461322).

The spelling of 1131222240011 in words is "one trillion, one hundred thirty-one billion, two hundred twenty-two million, two hundred forty thousand, eleven".