212105116353 has 16 divisors (see below), whose sum is σ = 304570325696. Its totient is φ = 130522311360.

The previous prime is 212105116351. The next prime is 212105116393. The reversal of 212105116353 is 353611501212.

It is not a de Polignac number, because 212105116353 - 2¹ = 212105116351 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212105116353.

It is not an unprimeable number, because it can be changed into a prime (212105116351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1764963 + ... + 1881303.

It is an arithmetic number, because the mean of its divisors is an integer number (19035645356).

Almost surely, 2^212105116353 is an apocalyptic number.

It is an amenable number.

212105116353 is a deficient number, since it is larger than the sum of its proper divisors (92465209343).

212105116353 is a wasteful number, since it uses less digits than its factorization.

212105116353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163104.

The product of its (nonzero) digits is 5400, while the sum is 30.

Adding to 212105116353 its reverse (353611501212), we get a palindrome (565716617565).

The spelling of 212105116353 in words is "two hundred twelve billion, one hundred five million, one hundred sixteen thousand, three hundred fifty-three".