100020201101020 has 48 divisors (see below), whose sum is σ = 224844698332800. Its totient is φ = 37259978564160.

The previous prime is 100020201101003. The next prime is 100020201101173. The reversal of 100020201101020 is 20101102020001.

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 = 100020201100988 and 100020201101006.

It is a congruent number.

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, 2230579746 + ... + 2230624585.

It is an arithmetic number, because the mean of its divisors is an integer number (4684264548600).

Almost surely, 2^{100020201101020} is an apocalyptic number.

100020201101020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100020201101020 is an abundant number, since it is smaller than the sum of its proper divisors (124824497231780).

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

100020201101020 is a wasteful number, since it uses less digits than its factorization.

100020201101020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4461204418 (or 4461204416 counting only the distinct ones).

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

Adding to 100020201101020 its reverse (20101102020001), we get a palindrome (120121303121021).

The spelling of 100020201101020 in words is "one hundred trillion, twenty billion, two hundred one million, one hundred one thousand, twenty".