1211159 has 4 divisors (see below), whose sum is σ = 1229304. Its totient is φ = 1193016.

The previous prime is 1211141. The next prime is 1211167. The reversal of 1211159 is 9511121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9511121 = 23 ⋅413527.

It is a cyclic number.

It is not a de Polignac number, because 1211159 - 2⁸ = 1210903 is a prime.

It is a super-2 number, since 2×1211159² = 2933812246562, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1211159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8972 + ... + 9105.

It is an arithmetic number, because the mean of its divisors is an integer number (307326).

2^1211159 is an apocalyptic number.

1211159 is a deficient number, since it is larger than the sum of its proper divisors (18145).

1211159 is an equidigital number, since it uses as much as digits as its factorization.

1211159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18144.

The product of its digits is 90, while the sum is 20.

The square root of 1211159 is about 1100.5266920888. The cubic root of 1211159 is about 106.5942357669.

The spelling of 1211159 in words is "one million, two hundred eleven thousand, one hundred fifty-nine".