100002022020 has 144 divisors (see below), whose sum is σ = 307685064960. Its totient is φ = 26286294528.

The previous prime is 100002022019. The next prime is 100002022027. The reversal of 100002022020 is 20220200001.

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 = 100002021993 and 100002022011.

It is not an unprimeable number, because it can be changed into a prime (100002022027) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9137992 + ... + 9148928.

It is an arithmetic number, because the mean of its divisors is an integer number (2136701840).

Almost surely, 2^100002022020 is an apocalyptic number.

100002022020 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 100002022020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153842532480).

100002022020 is an abundant number, since it is smaller than the sum of its proper divisors (207683042940).

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

100002022020 is a wasteful number, since it uses less digits than its factorization.

100002022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11674 (or 11669 counting only the distinct ones).

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

Adding to 100002022020 its reverse (20220200001), we get a palindrome (120222222021).

The spelling of 100002022020 in words is "one hundred billion, two million, twenty-two thousand, twenty".