211235134216 has 8 divisors (see below), whose sum is σ = 396065876670. Its totient is φ = 105617567104.

The previous prime is 211235134207. The next prime is 211235134237. The reversal of 211235134216 is 612431532112.

It can be written as a sum of positive squares in only one way, i.e., 210048056100 + 1187078116 = 458310^2 + 34454^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13202195881 + ... + 13202195896.

Almost surely, 2^211235134216 is an apocalyptic number.

It is an amenable number.

211235134216 is a deficient number, since it is larger than the sum of its proper divisors (184830742454).

211235134216 is a wasteful number, since it uses less digits than its factorization.

211235134216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26404391783 (or 26404391779 counting only the distinct ones).

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

Adding to 211235134216 its reverse (612431532112), we get a palindrome (823666666328).

The spelling of 211235134216 in words is "two hundred eleven billion, two hundred thirty-five million, one hundred thirty-four thousand, two hundred sixteen".