212106216635 has 8 divisors (see below), whose sum is σ = 255998718000. Its totient is φ = 168704134624.

The previous prime is 212106216617. The next prime is 212106216661. The reversal of 212106216635 is 536612601212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212106216635 - 2¹⁰ = 212106215611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212106216595 and 212106216604.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122603885 + ... + 122605614.

It is an arithmetic number, because the mean of its divisors is an integer number (31999839750).

Almost surely, 2^212106216635 is an apocalyptic number.

212106216635 is a deficient number, since it is larger than the sum of its proper divisors (43892501365).

212106216635 is a wasteful number, since it uses less digits than its factorization.

212106216635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245209677.

The product of its (nonzero) digits is 25920, while the sum is 35.

Adding to 212106216635 its reverse (536612601212), we get a palindrome (748718817847).

The spelling of 212106216635 in words is "two hundred twelve billion, one hundred six million, two hundred sixteen thousand, six hundred thirty-five".