100120011020 has 24 divisors (see below), whose sum is σ = 211131748800. Its totient is φ = 39880437632.

The previous prime is 100120010993. The next prime is 100120011031. The reversal of 100120011020 is 20110021001.

It is a junction number, because it is equal to n+sod(n) for n = 100120010989 and 100120011007.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10468025 + ... + 10477584.

It is an arithmetic number, because the mean of its divisors is an integer number (8797156200).

Almost surely, 2^100120011020 is an apocalyptic number.

100120011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100120011020 is an abundant number, since it is smaller than the sum of its proper divisors (111011737780).

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

100120011020 is a wasteful number, since it uses less digits than its factorization.

100120011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20945857 (or 20945855 counting only the distinct ones).

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

Adding to 100120011020 its reverse (20110021001), we get a palindrome (120230032021).

The spelling of 100120011020 in words is "one hundred billion, one hundred twenty million, eleven thousand, twenty".