11155142113 has 2 divisors, whose sum is σ = 11155142114. Its totient is φ = 11155142112.

The previous prime is 11155142081. The next prime is 11155142143. The reversal of 11155142113 is 31124155111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10121969664 + 1033172449 = 100608^2 + 32143^2 .

It is a cyclic number.

It is not a de Polignac number, because 11155142113 - 2⁵ = 11155142081 is a prime.

It is a super-2 number, since 2×11155142113² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11155142143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5577571056 + 5577571057.

It is an arithmetic number, because the mean of its divisors is an integer number (5577571057).

Almost surely, 2^11155142113 is an apocalyptic number.

It is an amenable number.

11155142113 is a deficient number, since it is larger than the sum of its proper divisors (1).

11155142113 is an equidigital number, since it uses as much as digits as its factorization.

11155142113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 600, while the sum is 25.

Adding to 11155142113 its reverse (31124155111), we get a palindrome (42279297224).

It can be divided in two parts, 111551 and 42113, that added together give a square (153664 = 392²).

The spelling of 11155142113 in words is "eleven billion, one hundred fifty-five million, one hundred forty-two thousand, one hundred thirteen".