212161116670 has 32 divisors (see below), whose sum is σ = 388403683200. Its totient is φ = 83417267616.

The previous prime is 212161116653. The next prime is 212161116707. The reversal of 212161116670 is 76611161212.

It is a super-3 number, since 3×212161116670³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 11169241 + ... + 11188219.

It is an arithmetic number, because the mean of its divisors is an integer number (12137615100).

Almost surely, 2^212161116670 is an apocalyptic number.

212161116670 is a deficient number, since it is larger than the sum of its proper divisors (176242566530).

212161116670 is a wasteful number, since it uses less digits than its factorization.

212161116670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37992.

The product of its (nonzero) digits is 6048, while the sum is 34.

Adding to 212161116670 its reverse (76611161212), we get a palindrome (288772277882).

The spelling of 212161116670 in words is "two hundred twelve billion, one hundred sixty-one million, one hundred sixteen thousand, six hundred seventy".