100000222020 has 288 divisors, whose sum is σ = 333853228800. Its totient is φ = 24116133888.

The previous prime is 100000221991. The next prime is 100000222033. The reversal of 100000222020 is 20222000001.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 100000221993 and 100000222011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 52937236 + ... + 52939124.

It is an arithmetic number, because the mean of its divisors is an integer number (1159212600).

Almost surely, 2^100000222020 is an apocalyptic number.

100000222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100000222020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166926614400).

100000222020 is an abundant number, since it is smaller than the sum of its proper divisors (233853006780).

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

100000222020 is a wasteful number, since it uses less digits than its factorization.

100000222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2619 (or 2614 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 100000222020 its reverse (20222000001), we get a palindrome (120222222021).

The spelling of 100000222020 in words is "one hundred billion, two hundred twenty-two thousand, twenty".