111101232020100 has 288 divisors, whose sum is σ = 384415435837440. Its totient is φ = 24222790479360.

The previous prime is 111101232020057. The next prime is 111101232020113. The reversal of 111101232020100 is 1020232101111.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 111101232020100.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 14136034 + ... + 20543366.

It is an arithmetic number, because the mean of its divisors is an integer number (1334775818880).

Almost surely, 2^{111101232020100} is an apocalyptic number.

111101232020100 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 111101232020100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192207717918720).

111101232020100 is an abundant number, since it is smaller than the sum of its proper divisors (273314203817340).

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

111101232020100 is a wasteful number, since it uses less digits than its factorization.

111101232020100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6407739 (or 6407732 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 111101232020100 its reverse (1020232101111), we get a palindrome (112121464121211).

The spelling of 111101232020100 in words is "one hundred eleven trillion, one hundred one billion, two hundred thirty-two million, twenty thousand, one hundred".