110121001220 has 24 divisors (see below), whose sum is σ = 235617389784. Its totient is φ = 43217298176.

The previous prime is 110121001219. The next prime is 110121001223. The reversal of 110121001220 is 22100121011.

It can be written as a sum of positive squares in 4 ways, for example, as 21325345024 + 88795656196 = 146032^2 + 297986^2 .

It is a super-3 number, since 3×110121001220³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (110121001223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51942809 + ... + 51944928.

It is an arithmetic number, because the mean of its divisors is an integer number (9817391241).

Almost surely, 2^110121001220 is an apocalyptic number.

110121001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

110121001220 is an abundant number, since it is smaller than the sum of its proper divisors (125496388564).

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

110121001220 is a wasteful number, since it uses less digits than its factorization.

110121001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103887799 (or 103887797 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 110121001220 its reverse (22100121011), we get a palindrome (132221122231).

The spelling of 110121001220 in words is "one hundred ten billion, one hundred twenty-one million, one thousand, two hundred twenty".