100100020022020 has 24 divisors (see below), whose sum is σ = 210231671227200. Its totient is φ = 40035888164832.

The previous prime is 100100020021993. The next prime is 100100020022027. The reversal of 100100020022020 is 20220020001001.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 100100020021988 and 100100020022006.

It is not an unprimeable number, because it can be changed into a prime (100100020022027) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 257291010 + ... + 257679769.

It is an arithmetic number, because the mean of its divisors is an integer number (8759652967800).

Almost surely, 2^{100100020022020} is an apocalyptic number.

100100020022020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100100020022020 is an abundant number, since it is smaller than the sum of its proper divisors (110131651205180).

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

100100020022020 is a wasteful number, since it uses less digits than its factorization.

100100020022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514980507 (or 514980505 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 100100020022020 its reverse (20220020001001), we get a palindrome (120320040023021).

The spelling of 100100020022020 in words is "one hundred trillion, one hundred billion, twenty million, twenty-two thousand, twenty".