211522201672 has 32 divisors (see below), whose sum is σ = 422653075200. Its totient is φ = 99010388224.

The previous prime is 211522201651. The next prime is 211522201673. The reversal of 211522201672 is 276102225112.

It is a happy number.

211522201672 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (211522201673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12220897 + ... + 12238192.

It is an arithmetic number, because the mean of its divisors is an integer number (13207908600).

Almost surely, 2^211522201672 is an apocalyptic number.

It is an amenable number.

211522201672 is a deficient number, since it is larger than the sum of its proper divisors (211130873528).

211522201672 is a wasteful number, since it uses less digits than its factorization.

211522201672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24459165 (or 24459161 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

Adding to 211522201672 its reverse (276102225112), we get a palindrome (487624426784).

The spelling of 211522201672 in words is "two hundred eleven billion, five hundred twenty-two million, two hundred one thousand, six hundred seventy-two".