2301121220 has 12 divisors (see below), whose sum is σ = 4832354604. Its totient is φ = 920448480.

The previous prime is 2301121219. The next prime is 2301121247. The reversal of 2301121220 is 221211032.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 589809796 + 1711311424 = 24286^2 + 41368^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2301121195 and 2301121204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57528011 + ... + 57528050.

It is an arithmetic number, because the mean of its divisors is an integer number (402696217).

Almost surely, 2^2301121220 is an apocalyptic number.

2301121220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2301121220 is an abundant number, since it is smaller than the sum of its proper divisors (2531233384).

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

2301121220 is a wasteful number, since it uses less digits than its factorization.

2301121220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115056070 (or 115056068 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2301121220 is about 47970.0033354179. The cubic root of 2301121220 is about 1320.2205822064.

Adding to 2301121220 its reverse (221211032), we get a palindrome (2522332252).

The spelling of 2301121220 in words is "two billion, three hundred one million, one hundred twenty-one thousand, two hundred twenty".