211230647472 has 60 divisors (see below), whose sum is σ = 590883387144. Its totient is φ = 64994042880.

The previous prime is 211230647423. The next prime is 211230647473. The reversal of 211230647472 is 274746032112.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 211230647472.

It is not an unprimeable number, because it can be changed into a prime (211230647473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13011529 + ... + 13027752.

Almost surely, 2^211230647472 is an apocalyptic number.

It is an amenable number.

211230647472 is an abundant number, since it is smaller than the sum of its proper divisors (379652739672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211230647472 is a wasteful number, since it uses less digits than its factorization.

211230647472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26039318 (or 26039299 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 39.

Adding to 211230647472 its reverse (274746032112), we get a palindrome (485976679584).

The spelling of 211230647472 in words is "two hundred eleven billion, two hundred thirty million, six hundred forty-seven thousand, four hundred seventy-two".