212105711610 has 48 divisors (see below), whose sum is σ = 593895995784. Its totient is φ = 52210636416.

The previous prime is 212105711507. The next prime is 212105711617. The reversal of 212105711610 is 16117501212.

212105711610 is a `hidden beast` number, since 21 + 2 + 10 + 5 + 7 + 11 + 610 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 191505137769 + 20600573841 = 437613^2 + 143529^2 .

It is not an unprimeable number, because it can be changed into a prime (212105711617) 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, 90642297 + ... + 90644636.

Almost surely, 2^212105711610 is an apocalyptic number.

212105711610 is an abundant number, since it is smaller than the sum of its proper divisors (381790284174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212105711610 is a wasteful number, since it uses less digits than its factorization.

212105711610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181286959 (or 181286956 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 27.

The spelling of 212105711610 in words is "two hundred twelve billion, one hundred five million, seven hundred eleven thousand, six hundred ten".