1131122211311 has 4 divisors (see below), whose sum is σ = 1131870804624. Its totient is φ = 1130373618000.

The previous prime is 1131122211283. The next prime is 1131122211337.

1131122211311 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131122211311 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 (1131122211911) 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, 374294390 + ... + 374297411.

It is an arithmetic number, because the mean of its divisors is an integer number (282967701156).

Almost surely, 2^{1131122211311} is an apocalyptic number.

1131122211311 is a deficient number, since it is larger than the sum of its proper divisors (748593313).

1131122211311 is an equidigital number, since it uses as much as digits as its factorization.

1131122211311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748593312.

The product of its digits is 72, while the sum is 20.

The spelling of 1131122211311 in words is "one trillion, one hundred thirty-one billion, one hundred twenty-two million, two hundred eleven thousand, three hundred eleven".