212856635628001 has 16 divisors (see below), whose sum is σ = 228248840131200. Its totient is φ = 197799558449920.

The previous prime is 212856635627939. The next prime is 212856635628059. The reversal of 212856635628001 is 100826536658212.

It is a cyclic number.

It is not a de Polignac number, because 212856635628001 - 2⁷ = 212856635627873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212856635628101) by changing a digit.

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, 251174035 + ... + 252020056.

It is an arithmetic number, because the mean of its divisors is an integer number (14265552508200).

Almost surely, 2^{212856635628001} is an apocalyptic number.

It is an amenable number.

212856635628001 is a deficient number, since it is larger than the sum of its proper divisors (15392204503199).

212856635628001 is a wasteful number, since it uses less digits than its factorization.

212856635628001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503194424.

The product of its (nonzero) digits is 8294400, while the sum is 55.

The spelling of 212856635628001 in words is "two hundred twelve trillion, eight hundred fifty-six billion, six hundred thirty-five million, six hundred twenty-eight thousand, one".