100221012012220 has 24 divisors (see below), whose sum is σ = 229597227519408. Its totient is φ = 36444004368000.

The previous prime is 100221012012211. The next prime is 100221012012223. The reversal of 100221012012220 is 22210210122001.

It is a happy number.

100221012012220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 100221012012194 and 100221012012203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100221012012223) 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, 227775027081 + ... + 227775027520.

It is an arithmetic number, because the mean of its divisors is an integer number (9566551146642).

Almost surely, 2^{100221012012220} is an apocalyptic number.

100221012012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100221012012220 is an abundant number, since it is smaller than the sum of its proper divisors (129376215507188).

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

100221012012220 is a wasteful number, since it uses less digits than its factorization.

100221012012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455550054621 (or 455550054619 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 100221012012220 its reverse (22210210122001), we get a palindrome (122431222134221).

The spelling of 100221012012220 in words is "one hundred trillion, two hundred twenty-one billion, twelve million, twelve thousand, two hundred twenty".