1111131125611 has 4 divisors (see below), whose sum is σ = 1196602750672. Its totient is φ = 1025659500552.

The previous prime is 1111131125591. The next prime is 1111131125627. The reversal of 1111131125611 is 1165211311111.

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 1111131125611 - 2¹⁵ = 1111131092843 is a prime.

It is a super-2 number, since 2×1111131125611² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111131125641) 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, 42735812511 + ... + 42735812536.

It is an arithmetic number, because the mean of its divisors is an integer number (299150687668).

Almost surely, 2^{1111131125611} is an apocalyptic number.

1111131125611 is a deficient number, since it is larger than the sum of its proper divisors (85471625061).

1111131125611 is an equidigital number, since it uses as much as digits as its factorization.

1111131125611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85471625060.

The product of its digits is 180, while the sum is 25.

Adding to 1111131125611 its reverse (1165211311111), we get a palindrome (2276342436722).

The spelling of 1111131125611 in words is "one trillion, one hundred eleven billion, one hundred thirty-one million, one hundred twenty-five thousand, six hundred eleven".