11130501181 has 2 divisors, whose sum is σ = 11130501182. Its totient is φ = 11130501180.

The previous prime is 11130501163. The next prime is 11130501211. The reversal of 11130501181 is 18110503111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10892261956 + 238239225 = 104366^2 + 15435^2 .

It is a cyclic number.

It is not a de Polignac number, because 11130501181 - 2⁵ = 11130501149 is a prime.

It is a super-2 number, since 2×11130501181² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11130501121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5565250590 + 5565250591.

It is an arithmetic number, because the mean of its divisors is an integer number (5565250591).

Almost surely, 2^11130501181 is an apocalyptic number.

It is an amenable number.

11130501181 is a deficient number, since it is larger than the sum of its proper divisors (1).

11130501181 is an equidigital number, since it uses as much as digits as its factorization.

11130501181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 22.

The spelling of 11130501181 in words is "eleven billion, one hundred thirty million, five hundred one thousand, one hundred eighty-one".