212040012234 has 64 divisors (see below), whose sum is σ = 439834079232. Its totient is φ = 68102337600.

The previous prime is 212040012229. The next prime is 212040012251. The reversal of 212040012234 is 432210040212.

212040012234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 212040012234.

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 in 31 ways as a sum of consecutive naturals, for example, 52731144 + ... + 52735164.

It is an arithmetic number, because the mean of its divisors is an integer number (6872407488).

Almost surely, 2^212040012234 is an apocalyptic number.

212040012234 is an abundant number, since it is smaller than the sum of its proper divisors (227794066998).

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

212040012234 is a wasteful number, since it uses less digits than its factorization.

212040012234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6931.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 212040012234 its reverse (432210040212), we get a palindrome (644250052446).

The spelling of 212040012234 in words is "two hundred twelve billion, forty million, twelve thousand, two hundred thirty-four".