110001121000020 has 72 divisors (see below), whose sum is σ = 333670944690720. Its totient is φ = 29333555110080.

The previous prime is 110001120999949. The next prime is 110001121000063. The reversal of 110001121000020 is 20000121100011.

It is a happy number.

It is a super-2 number, since 2×110001121000020² (a number of 29 digits) contains 22 as substring.

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 = 110001120999966 and 110001121000011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110575435 + ... + 111565805.

It is an arithmetic number, because the mean of its divisors is an integer number (4634318676260).

Almost surely, 2^{110001121000020} is an apocalyptic number.

110001121000020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

110001121000020 is an abundant number, since it is smaller than the sum of its proper divisors (223669823690700).

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

110001121000020 is a wasteful number, since it uses less digits than its factorization.

110001121000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607445 (or 1607440 counting only the distinct ones).

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

Adding to 110001121000020 its reverse (20000121100011), we get a palindrome (130001242100031).

Subtracting from 110001121000020 its reverse (20000121100011), we obtain a palindrome (90000999900009).

The spelling of 110001121000020 in words is "one hundred ten trillion, one billion, one hundred twenty-one million, twenty", and thus it is an aban number.