2212611165 has 24 divisors (see below), whose sum is σ = 3870386520. Its totient is φ = 1169230464.

The previous prime is 2212611061. The next prime is 2212611169. The reversal of 2212611165 is 5611162122.

2212611165 is a `hidden beast` number, since 22 + 12 + 611 + 16 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 356983236 + 1855627929 = 18894^2 + 43077^2 .

It is not a de Polignac number, because 2212611165 - 2²⁴ = 2195833949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212611169) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 220642 + ... + 230451.

It is an arithmetic number, because the mean of its divisors is an integer number (161266105).

Almost surely, 2^2212611165 is an apocalyptic number.

It is an amenable number.

2212611165 is a deficient number, since it is larger than the sum of its proper divisors (1657775355).

2212611165 is a wasteful number, since it uses less digits than its factorization.

2212611165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451213 (or 451210 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 2212611165 is about 47038.4009613422. The cubic root of 2212611165 is about 1303.0718608147.

Adding to 2212611165 its reverse (5611162122), we get a palindrome (7823773287).

The spelling of 2212611165 in words is "two billion, two hundred twelve million, six hundred eleven thousand, one hundred sixty-five".