221122220012 has 12 divisors (see below), whose sum is σ = 386968616496. Its totient is φ = 110559758160.

The previous prime is 221122220003. The next prime is 221122220017. The reversal of 221122220012 is 210022221122.

It is a happy number.

221122220012 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 (221122220017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90398 + ... + 671130.

It is an arithmetic number, because the mean of its divisors is an integer number (32247384708).

Almost surely, 2^221122220012 is an apocalyptic number.

It is an amenable number.

221122220012 is a deficient number, since it is larger than the sum of its proper divisors (165846396484).

221122220012 is a wasteful number, since it uses less digits than its factorization.

221122220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675928 (or 675926 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221122220012 its reverse (210022221122), we get a palindrome (431144441134).

The spelling of 221122220012 in words is "two hundred twenty-one billion, one hundred twenty-two million, two hundred twenty thousand, twelve".