212120104634 has 16 divisors (see below), whose sum is σ = 322595121960. Its totient is φ = 104588904960.

The previous prime is 212120104619. The next prime is 212120104667. The reversal of 212120104634 is 436401021212.

212120104634 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 167360355409 + 44759749225 = 409097^2 + 211565^2 .

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 7 ways as a sum of consecutive naturals, for example, 731762 + ... + 979650.

Almost surely, 2^212120104634 is an apocalyptic number.

212120104634 is a deficient number, since it is larger than the sum of its proper divisors (110475017326).

212120104634 is a wasteful number, since it uses less digits than its factorization.

212120104634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253825.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 212120104634 its reverse (436401021212), we get a palindrome (648521125846).

The spelling of 212120104634 in words is "two hundred twelve billion, one hundred twenty million, one hundred four thousand, six hundred thirty-four".