1211011159 has 2 divisors, whose sum is σ = 1211011160. Its totient is φ = 1211011158.

The previous prime is 1211011129. The next prime is 1211011181. The reversal of 1211011159 is 9511101121.

It is an a-pointer prime, because the next prime (1211011181) can be obtained adding 1211011159 to its sum of digits (22).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211011159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211011129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605505579 + 605505580.

It is an arithmetic number, because the mean of its divisors is an integer number (605505580).

Almost surely, 2^1211011159 is an apocalyptic number.

1211011159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211011159 is an equidigital number, since it uses as much as digits as its factorization.

1211011159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 22.

The square root of 1211011159 is about 34799.5856153489. The cubic root of 1211011159 is about 1065.8989842291.

The spelling of 1211011159 in words is "one billion, two hundred eleven million, eleven thousand, one hundred fifty-nine".