212240342043 has 16 divisors (see below), whose sum is σ = 314715248640. Its totient is φ = 141365260872.

The previous prime is 212240342021. The next prime is 212240342101. The reversal of 212240342043 is 340243042212.

212240342043 is a `hidden beast` number, since 212 + 2 + 403 + 4 + 2 + 0 + 43 = 666.

It is not a de Polignac number, because 212240342043 - 2⁸ = 212240341787 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 212240341998 and 212240342016.

It is not an unprimeable number, because it can be changed into a prime (212240342003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3533571 + ... + 3593132.

It is an arithmetic number, because the mean of its divisors is an integer number (19669703040).

Almost surely, 2^212240342043 is an apocalyptic number.

212240342043 is a deficient number, since it is larger than the sum of its proper divisors (102474906597).

212240342043 is a wasteful number, since it uses less digits than its factorization.

212240342043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7127815 (or 7127809 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 212240342043 its reverse (340243042212), we get a palindrome (552483384255).

The spelling of 212240342043 in words is "two hundred twelve billion, two hundred forty million, three hundred forty-two thousand, forty-three".