212112344340342 has 40 divisors (see below), whose sum is σ = 485401298649696. Its totient is φ = 69199771909968.

The previous prime is 212112344340319. The next prime is 212112344340349. The reversal of 212112344340342 is 243043443211212.

212112344340342 is a `hidden beast` number, since 2 + 1 + 2 + 1 + 1 + 234 + 43 + 40 + 342 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 212112344340297 and 212112344340306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212112344340349) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13929093013 + ... + 13929108240.

Almost surely, 2^{212112344340342} is an apocalyptic number.

212112344340342 is an abundant number, since it is smaller than the sum of its proper divisors (273288954309354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212112344340342 is a wasteful number, since it uses less digits than its factorization.

212112344340342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27858201314 (or 27858201305 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

Adding to 212112344340342 its reverse (243043443211212), we get a palindrome (455155787551554).

The spelling of 212112344340342 in words is "two hundred twelve trillion, one hundred twelve billion, three hundred forty-four million, three hundred forty thousand, three hundred forty-two".