216236011234 has 16 divisors (see below), whose sum is σ = 324737332920. Its totient is φ = 107990277120.

The previous prime is 216236011217. The next prime is 216236011241. The reversal of 216236011234 is 432110632612.

It can be written as a sum of positive squares in 4 ways, for example, as 77758995609 + 138477015625 = 278853^2 + 372125^2 .

It is a junction number, because it is equal to n+sod(n) for n = 216236011196 and 216236011205.

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, 19081282 + ... + 19092610.

Almost surely, 2^216236011234 is an apocalyptic number.

216236011234 is a deficient number, since it is larger than the sum of its proper divisors (108501321686).

216236011234 is a wasteful number, since it uses less digits than its factorization.

216236011234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21765.

The product of its (nonzero) digits is 10368, while the sum is 31.

Adding to 216236011234 its reverse (432110632612), we get a palindrome (648346643846).

The spelling of 216236011234 in words is "two hundred sixteen billion, two hundred thirty-six million, eleven thousand, two hundred thirty-four".