100111111032020 has 96 divisors (see below), whose sum is σ = 232097201763840. Its totient is φ = 35967871779840.

The previous prime is 100111111032017. The next prime is 100111111032089. The reversal of 100111111032020 is 20230111111001.

It is a junction number, because it is equal to n+sod(n) for n = 100111111031986 and 100111111032004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24056162 + ... + 27909158.

It is an arithmetic number, because the mean of its divisors is an integer number (2417679185040).

Almost surely, 2^{100111111032020} is an apocalyptic number.

100111111032020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100111111032020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116048600881920).

100111111032020 is an abundant number, since it is smaller than the sum of its proper divisors (131986090731820).

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

100111111032020 is a wasteful number, since it uses less digits than its factorization.

100111111032020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3854433 (or 3854431 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 100111111032020 its reverse (20230111111001), we get a palindrome (120341222143021).

The spelling of 100111111032020 in words is "one hundred trillion, one hundred eleven billion, one hundred eleven million, thirty-two thousand, twenty".