11131055051 has 4 divisors (see below), whose sum is σ = 11265164232. Its totient is φ = 10996945872.

The previous prime is 11131055041. The next prime is 11131055063. The reversal of 11131055051 is 15055013111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11131055051 is a prime.

It is a super-2 number, since 2×11131055051² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11131055011) 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, 67054466 + ... + 67054631.

It is an arithmetic number, because the mean of its divisors is an integer number (2816291058).

Almost surely, 2^11131055051 is an apocalyptic number.

11131055051 is a deficient number, since it is larger than the sum of its proper divisors (134109181).

11131055051 is an equidigital number, since it uses as much as digits as its factorization.

11131055051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134109180.

The product of its (nonzero) digits is 375, while the sum is 23.

Adding to 11131055051 its reverse (15055013111), we get a palindrome (26186068162).

The spelling of 11131055051 in words is "eleven billion, one hundred thirty-one million, fifty-five thousand, fifty-one".