221022220012 has 96 divisors (see below), whose sum is σ = 435207173184. Its totient is φ = 97371648000.

The previous prime is 221022219959. The next prime is 221022220019. The reversal of 221022220012 is 210022220122.

It is not an unprimeable number, because it can be changed into a prime (221022220019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44441958 + ... + 44446930.

It is an arithmetic number, because the mean of its divisors is an integer number (4533408054).

Almost surely, 2^221022220012 is an apocalyptic number.

221022220012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221022220012 is a deficient number, since it is larger than the sum of its proper divisors (214184953172).

221022220012 is a wasteful number, since it uses less digits than its factorization.

221022220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5299 (or 5297 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 221022220012 its reverse (210022220122), we get a palindrome (431044440134).

It can be divided in two parts, 2210 and 22220012, that added together give a palindrome (22222222).

The spelling of 221022220012 in words is "two hundred twenty-one billion, twenty-two million, two hundred twenty thousand, twelve".