213421243334 has 16 divisors (see below), whose sum is σ = 344816501568. Its totient is φ = 98485224192.

The previous prime is 213421243319. The next prime is 213421243349. The reversal of 213421243334 is 433342124312.

It is an interprime number because it is at equal distance from previous prime (213421243319) and next prime (213421243349).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 213421243334.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548462 + ... + 853025.

It is an arithmetic number, because the mean of its divisors is an integer number (21551031348).

Almost surely, 2^213421243334 is an apocalyptic number.

213421243334 is a deficient number, since it is larger than the sum of its proper divisors (131395258234).

213421243334 is a wasteful number, since it uses less digits than its factorization.

213421243334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407359.

The product of its digits is 41472, while the sum is 32.

Adding to 213421243334 its reverse (433342124312), we get a palindrome (646763367646).

The spelling of 213421243334 in words is "two hundred thirteen billion, four hundred twenty-one million, two hundred forty-three thousand, three hundred thirty-four".