1211024165 has 16 divisors (see below), whose sum is σ = 1565792256. Its totient is φ = 893851200.

The previous prime is 1211024159. The next prime is 1211024173. The reversal of 1211024165 is 5614201121.

It is not a de Polignac number, because 1211024165 - 2¹⁰ = 1211023141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1211024165.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 189980 + ... + 196250.

It is an arithmetic number, because the mean of its divisors is an integer number (97862016).

Almost surely, 2^1211024165 is an apocalyptic number.

It is an amenable number.

1211024165 is a deficient number, since it is larger than the sum of its proper divisors (354768091).

1211024165 is a wasteful number, since it uses less digits than its factorization.

1211024165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9260.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 1211024165 is about 34799.7724848885. The cubic root of 1211024165 is about 1065.9028000576.

Adding to 1211024165 its reverse (5614201121), we get a palindrome (6825225286).

The spelling of 1211024165 in words is "one billion, two hundred eleven million, twenty-four thousand, one hundred sixty-five".