100011110200020 has 144 divisors (see below), whose sum is σ = 307030331043072. Its totient is φ = 26347598641920.

The previous prime is 100011110199961. The next prime is 100011110200037. The reversal of 100011110200020 is 20002011110001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 100011110199975 and 100011110200011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 780595765 + ... + 780723875.

It is an arithmetic number, because the mean of its divisors is an integer number (2132155076688).

Almost surely, 2^{100011110200020} is an apocalyptic number.

100011110200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100011110200020 is an abundant number, since it is smaller than the sum of its proper divisors (207019220843052).

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

100011110200020 is a wasteful number, since it uses less digits than its factorization.

100011110200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180462 (or 180457 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 100011110200020 its reverse (20002011110001), we get a palindrome (120013121310021).

The spelling of 100011110200020 in words is "one hundred trillion, eleven billion, one hundred ten million, two hundred thousand, twenty".