212105116407 has 8 divisors (see below), whose sum is σ = 287600158080. Its totient is φ = 139006742840.

The previous prime is 212105116393. The next prime is 212105116411. The reversal of 212105116407 is 704611501212.

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 212105116407 - 2⁶ = 212105116343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212105116417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 599166819 + ... + 599167172.

It is an arithmetic number, because the mean of its divisors is an integer number (35950019760).

Almost surely, 2^212105116407 is an apocalyptic number.

212105116407 is a deficient number, since it is larger than the sum of its proper divisors (75495041673).

212105116407 is a wasteful number, since it uses less digits than its factorization.

212105116407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198334053.

The product of its (nonzero) digits is 3360, while the sum is 30.

Adding to 212105116407 its reverse (704611501212), we get a palindrome (916716617619).

The spelling of 212105116407 in words is "two hundred twelve billion, one hundred five million, one hundred sixteen thousand, four hundred seven".