216122511343 has 16 divisors (see below), whose sum is σ = 220559708160. Its totient is φ = 211726530400.

The previous prime is 216122511313. The next prime is 216122511373. The reversal of 216122511343 is 343115221612.

It is an interprime number because it is at equal distance from previous prime (216122511313) and next prime (216122511373).

It is a cyclic number.

It is not a de Polignac number, because 216122511343 - 2⁹ = 216122510831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216122511313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12833853 + ... + 12850681.

It is an arithmetic number, because the mean of its divisors is an integer number (13784981760).

Almost surely, 2^216122511343 is an apocalyptic number.

216122511343 is a deficient number, since it is larger than the sum of its proper divisors (4437196817).

216122511343 is a wasteful number, since it uses less digits than its factorization.

216122511343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18038.

The product of its digits is 8640, while the sum is 31.

Adding to 216122511343 its reverse (343115221612), we get a palindrome (559237732955).

The spelling of 216122511343 in words is "two hundred sixteen billion, one hundred twenty-two million, five hundred eleven thousand, three hundred forty-three".