11121121131 has 16 divisors (see below), whose sum is σ = 14926414080. Its totient is φ = 7364999520.

The previous prime is 11121121091. The next prime is 11121121181. The reversal of 11121121131 is 13112112111.

It is not a de Polignac number, because 11121121131 - 2¹⁰ = 11121120107 is a prime.

It is a super-2 number, since 2×11121121131² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11121121131.

It is not an unprimeable number, because it can be changed into a prime (11121121181) 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, 1321485 + ... + 1329873.

It is an arithmetic number, because the mean of its divisors is an integer number (932900880).

Almost surely, 2^11121121131 is an apocalyptic number.

11121121131 is a deficient number, since it is larger than the sum of its proper divisors (3805292949).

11121121131 is a wasteful number, since it uses less digits than its factorization.

11121121131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11266.

The product of its digits is 12, while the sum is 15.

Adding to 11121121131 its reverse (13112112111), we get a palindrome (24233233242).

The spelling of 11121121131 in words is "eleven billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred thirty-one".