11111121411 has 32 divisors (see below), whose sum is σ = 16208828160. Its totient is φ = 6728793984.

The previous prime is 11111121383. The next prime is 11111121431. The reversal of 11111121411 is 11412111111.

It is not a de Polignac number, because 11111121411 - 2¹³ = 11111113219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11111121431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4124581 + ... + 4127273.

It is an arithmetic number, because the mean of its divisors is an integer number (506525880).

Almost surely, 2^11111121411 is an apocalyptic number.

11111121411 is a deficient number, since it is larger than the sum of its proper divisors (5097706749).

11111121411 is a wasteful number, since it uses less digits than its factorization.

11111121411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4355.

The product of its digits is 8, while the sum is 15.

Adding to 11111121411 its reverse (11412111111), we get a palindrome (22523232522).

The spelling of 11111121411 in words is "eleven billion, one hundred eleven million, one hundred twenty-one thousand, four hundred eleven".