212063420242 has 4 divisors (see below), whose sum is σ = 318095130366. Its totient is φ = 106031710120.

The previous prime is 212063420209. The next prime is 212063420269. The reversal of 212063420242 is 242024360212.

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

It can be written as a sum of positive squares in only one way, i.e., 186709545801 + 25353874441 = 432099^2 + 159229^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 212063420242.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53015855059 + ... + 53015855062.

Almost surely, 2^212063420242 is an apocalyptic number.

212063420242 is a deficient number, since it is larger than the sum of its proper divisors (106031710124).

212063420242 is a wasteful number, since it uses less digits than its factorization.

212063420242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106031710123.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 212063420242 its reverse (242024360212), we get a palindrome (454087780454).

The spelling of 212063420242 in words is "two hundred twelve billion, sixty-three million, four hundred twenty thousand, two hundred forty-two".