1211140159 has 2 divisors, whose sum is σ = 1211140160. Its totient is φ = 1211140158.

The previous prime is 1211140111. The next prime is 1211140261. The reversal of 1211140159 is 9510411121.

It is a weak prime.

It is an emirp because it is prime and its reverse (9510411121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1211140159 - 2⁹ = 1211139647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211140109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605570079 + 605570080.

It is an arithmetic number, because the mean of its divisors is an integer number (605570080).

Almost surely, 2^1211140159 is an apocalyptic number.

1211140159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211140159 is an equidigital number, since it uses as much as digits as its factorization.

1211140159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 25.

The square root of 1211140159 is about 34801.4390363387. The cubic root of 1211140159 is about 1065.9368303123.

The spelling of 1211140159 in words is "one billion, two hundred eleven million, one hundred forty thousand, one hundred fifty-nine".