100221221121222 has 16 divisors (see below), whose sum is σ = 200777070700800. Its totient is φ = 33351302297352.

The previous prime is 100221221121221. The next prime is 100221221121239. The reversal of 100221221121222 is 222121122122001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100221221121221) 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, 13942848538 + ... + 13942855725.

It is an arithmetic number, because the mean of its divisors is an integer number (12548566918800).

Almost surely, 2^{100221221121222} is an apocalyptic number.

100221221121222 is an abundant number, since it is smaller than the sum of its proper divisors (100555849579578).

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

100221221121222 is a wasteful number, since it uses less digits than its factorization.

100221221121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27885704867.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 100221221121222 its reverse (222121122122001), we get a palindrome (322342343243223).

The spelling of 100221221121222 in words is "one hundred trillion, two hundred twenty-one billion, two hundred twenty-one million, one hundred twenty-one thousand, two hundred twenty-two".