212011316145 has 12 divisors (see below), whose sum is σ = 367486281396. Its totient is φ = 113072701920.

The previous prime is 212011316117. The next prime is 212011316159. The reversal of 212011316145 is 541613110212.

212011316145 is a `hidden beast` number, since 2 + 1 + 2 + 0 + 11 + 31 + 614 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 143004229281 + 69007086864 = 378159^2 + 262692^2 .

It is not a de Polignac number, because 212011316145 - 2⁷ = 212011316017 is a prime.

It is a super-2 number, since 2×212011316145² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2355681246 + ... + 2355681335.

It is an arithmetic number, because the mean of its divisors is an integer number (30623856783).

Almost surely, 2^212011316145 is an apocalyptic number.

It is an amenable number.

212011316145 is a deficient number, since it is larger than the sum of its proper divisors (155474965251).

212011316145 is a wasteful number, since it uses less digits than its factorization.

212011316145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4711362592 (or 4711362589 counting only the distinct ones).

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

Adding to 212011316145 its reverse (541613110212), we get a palindrome (753624426357).

The spelling of 212011316145 in words is "two hundred twelve billion, eleven million, three hundred sixteen thousand, one hundred forty-five".