110121220 has 48 divisors (see below), whose sum is σ = 254270016. Its totient is φ = 39728000.

The previous prime is 110121211. The next prime is 110121233. The reversal of 110121220 is 22121011.

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 = 110121197 and 110121206.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26910 + ... + 30730.

It is an arithmetic number, because the mean of its divisors is an integer number (5297292).

Almost surely, 2^110121220 is an apocalyptic number.

110121220 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 110121220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127135008).

110121220 is an abundant number, since it is smaller than the sum of its proper divisors (144148796).

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

110121220 is a wasteful number, since it uses less digits than its factorization.

110121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3972 (or 3970 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 110121220 is about 10493.8658272345. The cubic root of 110121220 is about 479.3179259161.

Adding to 110121220 its reverse (22121011), we get a palindrome (132242231).

The spelling of 110121220 in words is "one hundred ten million, one hundred twenty-one thousand, two hundred twenty".