100001100012020 has 24 divisors (see below), whose sum is σ = 210838972625568. Its totient is φ = 39841075700000.

The previous prime is 100001100011977. The next prime is 100001100012029. The reversal of 100001100012020 is 20210001100001.

It is a super-2 number, since 2×100001100012020² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100001100011989 and 100001100012007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100001100012029) 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, 9960263906 + ... + 9960273945.

It is an arithmetic number, because the mean of its divisors is an integer number (8784957192732).

Almost surely, 2^{100001100012020} is an apocalyptic number.

100001100012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100001100012020 is an abundant number, since it is smaller than the sum of its proper divisors (110837872613548).

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

100001100012020 is a wasteful number, since it uses less digits than its factorization.

100001100012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19920538111 (or 19920538109 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 100001100012020 its reverse (20210001100001), we get a palindrome (120211101112021).

The spelling of 100001100012020 in words is "one hundred trillion, one billion, one hundred million, twelve thousand, twenty".