111001120010020 has 24 divisors (see below), whose sum is σ = 238061976534144. Its totient is φ = 43455757620576.

The previous prime is 111001120009993. The next prime is 111001120010047. The reversal of 111001120010020 is 20010021100111.

It is an interprime number because it is at equal distance from previous prime (111001120009993) and next prime (111001120010047).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 111001120009979 and 111001120010006.

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, 59043148002 + ... + 59043149881.

It is an arithmetic number, because the mean of its divisors is an integer number (9919249022256).

Almost surely, 2^{111001120010020} is an apocalyptic number.

111001120010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111001120010020 is an abundant number, since it is smaller than the sum of its proper divisors (127060856524124).

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

111001120010020 is a wasteful number, since it uses less digits than its factorization.

111001120010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118086297939 (or 118086297937 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 111001120010020 its reverse (20010021100111), we get a palindrome (131011141110131).

It can be divided in two parts, 111001 and 120010020, that added together give a palindrome (120121021).

The spelling of 111001120010020 in words is "one hundred eleven trillion, one billion, one hundred twenty million, ten thousand, twenty".