100101321220 has 48 divisors (see below), whose sum is σ = 211238899200. Its totient is φ = 39845312640.

The previous prime is 100101321209. The next prime is 100101321259. The reversal of 100101321220 is 22123101001.

It is a self number, because there is not a number n which added to its sum of digits gives 100101321220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7741921 + ... + 7754839.

It is an arithmetic number, because the mean of its divisors is an integer number (4400810400).

Almost surely, 2^100101321220 is an apocalyptic number.

100101321220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100101321220 is an abundant number, since it is smaller than the sum of its proper divisors (111137577980).

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

100101321220 is a wasteful number, since it uses less digits than its factorization.

100101321220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14788 (or 14786 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 100101321220 its reverse (22123101001), we get a palindrome (122224422221).

The spelling of 100101321220 in words is "one hundred billion, one hundred one million, three hundred twenty-one thousand, two hundred twenty".