100101221012220 has 48 divisors (see below), whose sum is σ = 287119599788448. Its totient is φ = 26042594083840.

The previous prime is 100101221012209. The next prime is 100101221012249. The reversal of 100101221012220 is 22210122101001.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 100101221012220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20345774169 + ... + 20345779088.

It is an arithmetic number, because the mean of its divisors is an integer number (5981658328926).

Almost surely, 2^{100101221012220} is an apocalyptic number.

100101221012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100101221012220 is an abundant number, since it is smaller than the sum of its proper divisors (187018378776228).

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

100101221012220 is a wasteful number, since it uses less digits than its factorization.

100101221012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40691553310 (or 40691553308 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 100101221012220 its reverse (22210122101001), we get a palindrome (122311343113221).

The spelling of 100101221012220 in words is "one hundred trillion, one hundred one billion, two hundred twenty-one million, twelve thousand, two hundred twenty".