212040434443 has 8 divisors (see below), whose sum is σ = 213749300288. Its totient is φ = 210336544584.

The previous prime is 212040434363. The next prime is 212040434447. The reversal of 212040434443 is 344434040212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212040434443 - 2¹³ = 212040426251 is a prime.

It is a super-2 number, since 2×212040434443² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212040434447) 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 7 ways as a sum of consecutive naturals, for example, 1158405 + ... + 1328902.

It is an arithmetic number, because the mean of its divisors is an integer number (26718662536).

Almost surely, 2^212040434443 is an apocalyptic number.

212040434443 is a deficient number, since it is larger than the sum of its proper divisors (1708865845).

212040434443 is a wasteful number, since it uses less digits than its factorization.

212040434443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487993.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 212040434443 its reverse (344434040212), we get a palindrome (556474474655).

The spelling of 212040434443 in words is "two hundred twelve billion, forty million, four hundred thirty-four thousand, four hundred forty-three".