11142231111 has 24 divisors (see below), whose sum is σ = 17572862736. Its totient is φ = 6746941440.

The previous prime is 11142231101. The next prime is 11142231127. The reversal of 11142231111 is 11113224111.

It is not a de Polignac number, because 11142231111 - 2¹³ = 11142222919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11142231101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65341 + ... + 162953.

It is an arithmetic number, because the mean of its divisors is an integer number (732202614).

Almost surely, 2^11142231111 is an apocalyptic number.

11142231111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11142231111 is a deficient number, since it is larger than the sum of its proper divisors (6430631625).

11142231111 is a wasteful number, since it uses less digits than its factorization.

11142231111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98783 (or 98780 counting only the distinct ones).

The product of its digits is 48, while the sum is 18.

Adding to 11142231111 its reverse (11113224111), we get a palindrome (22255455222).

The spelling of 11142231111 in words is "eleven billion, one hundred forty-two million, two hundred thirty-one thousand, one hundred eleven".