213211434442 has 8 divisors (see below), whose sum is σ = 319832443332. Its totient is φ = 106600620000.

The previous prime is 213211434439. The next prime is 213211434467. The reversal of 213211434442 is 244434112312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 187115939761 + 26095494681 = 432569^2 + 161541^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2496109 + ... + 2580112.

Almost surely, 2^213211434442 is an apocalyptic number.

213211434442 is a deficient number, since it is larger than the sum of its proper divisors (106621008890).

213211434442 is a wasteful number, since it uses less digits than its factorization.

213211434442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5097224.

The product of its digits is 18432, while the sum is 31.

Adding to 213211434442 its reverse (244434112312), we get a palindrome (457645546754).

The spelling of 213211434442 in words is "two hundred thirteen billion, two hundred eleven million, four hundred thirty-four thousand, four hundred forty-two".