2440220321 has 16 divisors (see below), whose sum is σ = 3052764288. Its totient is φ = 1894963200.

The previous prime is 2440220281. The next prime is 2440220323. The reversal of 2440220321 is 1230220442.

It is a cyclic number.

It is not a de Polignac number, because 2440220321 - 2⁶ = 2440220257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2440220293 and 2440220302.

It is not an unprimeable number, because it can be changed into a prime (2440220323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31520 + ... + 76641.

It is an arithmetic number, because the mean of its divisors is an integer number (190797768).

Almost surely, 2^2440220321 is an apocalyptic number.

It is an amenable number.

2440220321 is a deficient number, since it is larger than the sum of its proper divisors (612543967).

2440220321 is a wasteful number, since it uses less digits than its factorization.

2440220321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108472.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 2440220321 is about 49398.5862247089. The cubic root of 2440220321 is about 1346.3036187297.

Adding to 2440220321 its reverse (1230220442), we get a palindrome (3670440763).

The spelling of 2440220321 in words is "two billion, four hundred forty million, two hundred twenty thousand, three hundred twenty-one".