1131101222111 has 16 divisors (see below), whose sum is σ = 1361200008960. Its totient is φ = 918166415040.

The previous prime is 1131101222099. The next prime is 1131101222191. The reversal of 1131101222111 is 1112221011311.

It is not a de Polignac number, because 1131101222111 - 2⁶ = 1131101222047 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 1131101222111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131101222191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1108385 + ... + 1868346.

It is an arithmetic number, because the mean of its divisors is an integer number (85075000560).

Almost surely, 2^{1131101222111} is an apocalyptic number.

1131101222111 is a deficient number, since it is larger than the sum of its proper divisors (230098786849).

1131101222111 is a wasteful number, since it uses less digits than its factorization.

1131101222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2979614.

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

Adding to 1131101222111 its reverse (1112221011311), we get a palindrome (2243322233422).

The spelling of 1131101222111 in words is "one trillion, one hundred thirty-one billion, one hundred one million, two hundred twenty-two thousand, one hundred eleven".