213210333242 has 4 divisors (see below), whose sum is σ = 319815499866. Its totient is φ = 106605166620.

The previous prime is 213210333179. The next prime is 213210333257. The reversal of 213210333242 is 242333012312.

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 only one way, i.e., 188980608961 + 24229724281 = 434719^2 + 155659^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53302583309 + ... + 53302583312.

Almost surely, 2^213210333242 is an apocalyptic number.

213210333242 is a deficient number, since it is larger than the sum of its proper divisors (106605166624).

213210333242 is a wasteful number, since it uses less digits than its factorization.

213210333242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106605166623.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 213210333242 its reverse (242333012312), we get a palindrome (455543345554).

The spelling of 213210333242 in words is "two hundred thirteen billion, two hundred ten million, three hundred thirty-three thousand, two hundred forty-two".