1131222011111 has 8 divisors (see below), whose sum is σ = 1134009072000. Its totient is φ = 1128435366520.

The previous prime is 1131222011107. The next prime is 1131222011167. The reversal of 1131222011111 is 1111102221311.

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 1131222011111 - 2² = 1131222011107 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 1131222011111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131221011111) 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, 5740190 + ... + 5933988.

It is an arithmetic number, because the mean of its divisors is an integer number (141751134000).

Almost surely, 2^{1131222011111} is an apocalyptic number.

1131222011111 is a deficient number, since it is larger than the sum of its proper divisors (2787060889).

1131222011111 is a wasteful number, since it uses less digits than its factorization.

1131222011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208149.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 1131222011111 its reverse (1111102221311), we get a palindrome (2242324232422).

The spelling of 1131222011111 in words is "one trillion, one hundred thirty-one billion, two hundred twenty-two million, eleven thousand, one hundred eleven".