111143543129 has 2 divisors, whose sum is σ = 111143543130. Its totient is φ = 111143543128.

The previous prime is 111143543029. The next prime is 111143543179. The reversal of 111143543129 is 921345341111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103200277504 + 7943265625 = 321248^2 + 89125^2 .

It is a cyclic number.

It is not a de Polignac number, because 111143543129 - 2¹⁶ = 111143477593 is a prime.

It is a super-2 number, since 2×111143543129² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111143543179) 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, 55571771564 + 55571771565.

It is an arithmetic number, because the mean of its divisors is an integer number (55571771565).

Almost surely, 2^111143543129 is an apocalyptic number.

It is an amenable number.

111143543129 is a deficient number, since it is larger than the sum of its proper divisors (1).

111143543129 is an equidigital number, since it uses as much as digits as its factorization.

111143543129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 35.

The spelling of 111143543129 in words is "one hundred eleven billion, one hundred forty-three million, five hundred forty-three thousand, one hundred twenty-nine".