220110020121220 has 24 divisors (see below), whose sum is σ = 462622431840408. Its totient is φ = 87969457651200.

The previous prime is 220110020121203. The next prime is 220110020121241. The reversal of 220110020121220 is 22121020011022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 142415773380864 + 77694246740356 = 11933808^2 + 8814434^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220110020121194 and 220110020121203.

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, 4659375621 + ... + 4659422860.

It is an arithmetic number, because the mean of its divisors is an integer number (19275934660017).

Almost surely, 2^{220110020121220} is an apocalyptic number.

220110020121220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220110020121220 is an abundant number, since it is smaller than the sum of its proper divisors (242512411719188).

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

220110020121220 is a wasteful number, since it uses less digits than its factorization.

220110020121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9318799671 (or 9318799669 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 220110020121220 its reverse (22121020011022), we get a palindrome (242231040132242).

The spelling of 220110020121220 in words is "two hundred twenty trillion, one hundred ten billion, twenty million, one hundred twenty-one thousand, two hundred twenty".