2201020221220 has 12 divisors (see below), whose sum is σ = 4622142464604. Its totient is φ = 880408088480.

The previous prime is 2201020221209. The next prime is 2201020221227. The reversal of 2201020221220 is 221220201022.

It can be written as a sum of positive squares in 2 ways, for example, as 1202667542244 + 998352678976 = 1096662^2 + 999176^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2201020221194 and 2201020221203.

It is not an unprimeable number, because it can be changed into a prime (2201020221227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55025505511 + ... + 55025505550.

It is an arithmetic number, because the mean of its divisors is an integer number (385178538717).

Almost surely, 2^{2201020221220} is an apocalyptic number.

2201020221220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2201020221220 is an abundant number, since it is smaller than the sum of its proper divisors (2421122243384).

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

2201020221220 is a wasteful number, since it uses less digits than its factorization.

2201020221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110051011070 (or 110051011068 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 2201020221220 its reverse (221220201022), we get a palindrome (2422240422242).

The spelling of 2201020221220 in words is "two trillion, two hundred one billion, twenty million, two hundred twenty-one thousand, two hundred twenty".