1131222131311 has 4 divisors (see below), whose sum is σ = 1131233297824. Its totient is φ = 1131210964800.

The previous prime is 1131222131279. The next prime is 1131222131341. The reversal of 1131222131311 is 1131312221311.

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 1131222131311 - 2⁵ = 1131222131279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131222131341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5429895 + ... + 5634376.

It is an arithmetic number, because the mean of its divisors is an integer number (282808324456).

Almost surely, 2^{1131222131311} is an apocalyptic number.

1131222131311 is a deficient number, since it is larger than the sum of its proper divisors (11166513).

1131222131311 is a wasteful number, since it uses less digits than its factorization.

1131222131311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11166512.

The product of its digits is 216, while the sum is 22.

Adding to 1131222131311 its reverse (1131312221311), we get a palindrome (2262534352622).

The spelling of 1131222131311 in words is "one trillion, one hundred thirty-one billion, two hundred twenty-two million, one hundred thirty-one thousand, three hundred eleven".