212176213387 has 16 divisors (see below), whose sum is σ = 215771904000. Its totient is φ = 208605013344.

The previous prime is 212176213373. The next prime is 212176213391. The reversal of 212176213387 is 783312671212.

It is a cyclic number.

It is not a de Polignac number, because 212176213387 - 2⁷ = 212176213259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212176213397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21067189 + ... + 21077257.

It is an arithmetic number, because the mean of its divisors is an integer number (13485744000).

Almost surely, 2^212176213387 is an apocalyptic number.

212176213387 is a deficient number, since it is larger than the sum of its proper divisors (3595690613).

212176213387 is a wasteful number, since it uses less digits than its factorization.

212176213387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11250.

The product of its digits is 169344, while the sum is 43.

Adding to 212176213387 its reverse (783312671212), we get a palindrome (995488884599).

The spelling of 212176213387 in words is "two hundred twelve billion, one hundred seventy-six million, two hundred thirteen thousand, three hundred eighty-seven".