1111131121111 has 16 divisors (see below), whose sum is σ = 1284705308160. Its totient is φ = 949767287680.

The previous prime is 1111131121109. The next prime is 1111131121151. The reversal of 1111131121111 is 1111211311111.

It is a cyclic number.

It is not a de Polignac number, because 1111131121111 - 2¹ = 1111131121109 is a prime.

It is a super-2 number, since 2×1111131121111² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111131121151) 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, 2724991 + ... + 3106096.

It is an arithmetic number, because the mean of its divisors is an integer number (80294081760).

Almost surely, 2^{1111131121111} is an apocalyptic number.

1111131121111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1111131121111 is a deficient number, since it is larger than the sum of its proper divisors (173574187049).

1111131121111 is a wasteful number, since it uses less digits than its factorization.

1111131121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5832134.

The product of its digits is 6, while the sum is 16.

Adding to 1111131121111 its reverse (1111211311111), we get a palindrome (2222342432222).

The spelling of 1111131121111 in words is "one trillion, one hundred eleven billion, one hundred thirty-one million, one hundred twenty-one thousand, one hundred eleven".