100221322020 has 48 divisors (see below), whose sum is σ = 285914422080. Its totient is φ = 26221426816.

The previous prime is 100221322007. The next prime is 100221322051. The reversal of 100221322020 is 20223122001.

It is a happy number.

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

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, 15754890 + ... + 15761249.

It is an arithmetic number, because the mean of its divisors is an integer number (5956550460).

Almost surely, 2^100221322020 is an apocalyptic number.

100221322020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100221322020 is an abundant number, since it is smaller than the sum of its proper divisors (185693100060).

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

100221322020 is a wasteful number, since it uses less digits than its factorization.

100221322020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31516204 (or 31516202 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 100221322020 its reverse (20223122001), we get a palindrome (120444444021).

The spelling of 100221322020 in words is "one hundred billion, two hundred twenty-one million, three hundred twenty-two thousand, twenty".