32012221212 has 72 divisors (see below), whose sum is σ = 90189262800. Its totient is φ = 9514464768.

The previous prime is 32012221177. The next prime is 32012221217. The reversal of 32012221212 is 21212221023.

32012221212 is a `hidden beast` number, since 320 + 1 + 222 + 121 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32012221217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1364887 + ... + 1388142.

It is an arithmetic number, because the mean of its divisors is an integer number (1252628650).

Almost surely, 2^32012221212 is an apocalyptic number.

It is an amenable number.

32012221212 is an abundant number, since it is smaller than the sum of its proper divisors (58177041588).

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

32012221212 is a wasteful number, since it uses less digits than its factorization.

32012221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2753075 (or 2753070 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 32012221212 its reverse (21212221023), we get a palindrome (53224442235).

The spelling of 32012221212 in words is "thirty-two billion, twelve million, two hundred twenty-one thousand, two hundred twelve".