100020022020 has 48 divisors (see below), whose sum is σ = 311173403520. Its totient is φ = 26672005728.

The previous prime is 100020022001. The next prime is 100020022079. The reversal of 100020022020 is 20220020001.

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 = 100020021993 and 100020022011.

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, 92610592 + ... + 92611671.

It is an arithmetic number, because the mean of its divisors is an integer number (6482779240).

Almost surely, 2^100020022020 is an apocalyptic number.

100020022020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100020022020 is an abundant number, since it is smaller than the sum of its proper divisors (211153381500).

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

100020022020 is a wasteful number, since it uses less digits than its factorization.

100020022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185222281 (or 185222273 counting only the distinct ones).

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

Adding to 100020022020 its reverse (20220020001), we get a palindrome (120240042021).

The spelling of 100020022020 in words is "one hundred billion, twenty million, twenty-two thousand, twenty".