100001000022020 has 12 divisors (see below), whose sum is σ = 210002100046284. Its totient is φ = 40000400008800.

The previous prime is 100001000021947. The next prime is 100001000022037. The reversal of 100001000022020 is 20220000100001.

It can be written as a sum of positive squares in 2 ways, for example, as 71659069268224 + 28341930753796 = 8465168^2 + 5323714^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100001000021989 and 100001000022007.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2500025000531 + ... + 2500025000570.

It is an arithmetic number, because the mean of its divisors is an integer number (17500175003857).

Almost surely, 2^{100001000022020} is an apocalyptic number.

100001000022020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100001000022020 is an abundant number, since it is smaller than the sum of its proper divisors (110001100024264).

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

100001000022020 is a wasteful number, since it uses less digits than its factorization.

100001000022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5000050001110 (or 5000050001108 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 100001000022020 its reverse (20220000100001), we get a palindrome (120221000122021).

The spelling of 100001000022020 in words is "one hundred trillion, one billion, twenty-two thousand, twenty".