212042433601 has 4 divisors (see below), whose sum is σ = 212221979604. Its totient is φ = 211862887600.

The previous prime is 212042433553. The next prime is 212042433619. The reversal of 212042433601 is 106334240212.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 153761231376 + 58281202225 = 392124^2 + 241415^2 .

It is a cyclic number.

It is not a de Polignac number, because 212042433601 - 2⁹ = 212042433089 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212042433601.

It is not an unprimeable number, because it can be changed into a prime (212042433301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89771230 + ... + 89773591.

It is an arithmetic number, because the mean of its divisors is an integer number (53055494901).

Almost surely, 2^212042433601 is an apocalyptic number.

It is an amenable number.

212042433601 is a deficient number, since it is larger than the sum of its proper divisors (179546003).

212042433601 is a wasteful number, since it uses less digits than its factorization.

212042433601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179546002.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 212042433601 its reverse (106334240212), we get a palindrome (318376673813).

The spelling of 212042433601 in words is "two hundred twelve billion, forty-two million, four hundred thirty-three thousand, six hundred one".