1111144141 has 2 divisors, whose sum is σ = 1111144142. Its totient is φ = 1111144140.

The previous prime is 1111144103. The next prime is 1111144163. The reversal of 1111144141 is 1414411111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 865595241 + 245548900 = 29421^2 + 15670^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111144141 - 2⁹ = 1111143629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111144171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555572070 + 555572071.

It is an arithmetic number, because the mean of its divisors is an integer number (555572071).

Almost surely, 2^1111144141 is an apocalyptic number.

It is an amenable number.

1111144141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111144141 is an equidigital number, since it uses as much as digits as its factorization.

1111144141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64, while the sum is 19.

The square root of 1111144141 is about 33333.8287779847. The cubic root of 1111144141 is about 1035.7544317040.

Adding to 1111144141 its reverse (1414411111), we get a palindrome (2525555252).

The spelling of 1111144141 in words is "one billion, one hundred eleven million, one hundred forty-four thousand, one hundred forty-one".