212142104102 has 4 divisors (see below), whose sum is σ = 318213156156. Its totient is φ = 106071052050.

The previous prime is 212142104099. The next prime is 212142104123. The reversal of 212142104102 is 201401241212.

212142104102 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53035526024 + ... + 53035526027.

It is an arithmetic number, because the mean of its divisors is an integer number (79553289039).

Almost surely, 2^212142104102 is an apocalyptic number.

212142104102 is a deficient number, since it is larger than the sum of its proper divisors (106071052054).

212142104102 is a wasteful number, since it uses less digits than its factorization.

212142104102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106071052053.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 212142104102 its reverse (201401241212), we get a palindrome (413543345314).

The spelling of 212142104102 in words is "two hundred twelve billion, one hundred forty-two million, one hundred four thousand, one hundred two".