21967327212 has 24 divisors (see below), whose sum is σ = 51262374912. Its totient is φ = 7321688400.

The previous prime is 21967327211. The next prime is 21967327237. The reversal of 21967327212 is 21272376912.

It is not an unprimeable number, because it can be changed into a prime (21967327211) 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, 34137 + ... + 212367.

It is an arithmetic number, because the mean of its divisors is an integer number (2135932288).

Almost surely, 2^21967327212 is an apocalyptic number.

It is an amenable number.

21967327212 is an abundant number, since it is smaller than the sum of its proper divisors (29295047700).

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

21967327212 is a wasteful number, since it uses less digits than its factorization.

21967327212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188509 (or 188507 counting only the distinct ones).

The product of its digits is 127008, while the sum is 42.

The spelling of 21967327212 in words is "twenty-one billion, nine hundred sixty-seven million, three hundred twenty-seven thousand, two hundred twelve".