100101210020020 has 48 divisors (see below), whose sum is σ = 232085697052608. Its totient is φ = 35961880482560.

The previous prime is 100101210019999. The next prime is 100101210020023. The reversal of 100101210020020 is 20020012101001.

It is a super-3 number, since 3×100101210020020³ (a number of 43 digits) contains 333 as substring.

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 = 100101210019979 and 100101210020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100101210020023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2740978729 + ... + 2741015248.

It is an arithmetic number, because the mean of its divisors is an integer number (4835118688596).

Almost surely, 2^{100101210020020} is an apocalyptic number.

100101210020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100101210020020 is an abundant number, since it is smaller than the sum of its proper divisors (131984487032588).

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

100101210020020 is a wasteful number, since it uses less digits than its factorization.

100101210020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5481994080 (or 5481994078 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 100101210020020 its reverse (20020012101001), we get a palindrome (120121222121021).

The spelling of 100101210020020 in words is "one hundred trillion, one hundred one billion, two hundred ten million, twenty thousand, twenty".