212684112355 has 64 divisors (see below), whose sum is σ = 306589183488. Its totient is φ = 139602677760.

The previous prime is 212684112349. The next prime is 212684112371. The reversal of 212684112355 is 553211486212.

It is a happy number.

It is not a de Polignac number, because 212684112355 - 2⁵ = 212684112323 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 5737992 + ... + 5774938.

It is an arithmetic number, because the mean of its divisors is an integer number (4790455992).

Almost surely, 2^212684112355 is an apocalyptic number.

212684112355 is a deficient number, since it is larger than the sum of its proper divisors (93905071133).

212684112355 is a wasteful number, since it uses less digits than its factorization.

212684112355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37156.

The product of its digits is 115200, while the sum is 40.

Adding to 212684112355 its reverse (553211486212), we get a palindrome (765895598567).

The spelling of 212684112355 in words is "two hundred twelve billion, six hundred eighty-four million, one hundred twelve thousand, three hundred fifty-five".