2220440321 has 32 divisors (see below), whose sum is σ = 2582084736. Its totient is φ = 1891008000.

The previous prime is 2220440291. The next prime is 2220440323. The reversal of 2220440321 is 1230440222.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2220440321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2220440293 and 2220440302.

It is not an unprimeable number, because it can be changed into a prime (2220440323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1182035 + ... + 1183911.

It is an arithmetic number, because the mean of its divisors is an integer number (80690148).

Almost surely, 2^2220440321 is an apocalyptic number.

It is an amenable number.

2220440321 is a deficient number, since it is larger than the sum of its proper divisors (361644415).

2220440321 is a wasteful number, since it uses less digits than its factorization.

2220440321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2033.

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

The square root of 2220440321 is about 47121.5483722681. The cubic root of 2220440321 is about 1304.6069917485.

Adding to 2220440321 its reverse (1230440222), we get a palindrome (3450880543).

Subtracting from 2220440321 its reverse (1230440222), we obtain a palindrome (990000099).

The spelling of 2220440321 in words is "two billion, two hundred twenty million, four hundred forty thousand, three hundred twenty-one".