100120200002020 has 24 divisors (see below), whose sum is σ = 229366276368768. Its totient is φ = 36407345455200.

The previous prime is 100120200002003. The next prime is 100120200002021. The reversal of 100120200002020 is 20200002021001.

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 = 100120200001988 and 100120200002006.

It is not an unprimeable number, because it can be changed into a prime (100120200002021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227545908876 + ... + 227545909315.

It is an arithmetic number, because the mean of its divisors is an integer number (9556928182032).

Almost surely, 2^{100120200002020} is an apocalyptic number.

100120200002020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100120200002020 is an abundant number, since it is smaller than the sum of its proper divisors (129246076366748).

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

100120200002020 is a wasteful number, since it uses less digits than its factorization.

100120200002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455091818211 (or 455091818209 counting only the distinct ones).

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

Adding to 100120200002020 its reverse (20200002021001), we get a palindrome (120320202023021).

The spelling of 100120200002020 in words is "one hundred trillion, one hundred twenty billion, two hundred million, two thousand, twenty".