2221440403 has 16 divisors (see below), whose sum is σ = 2772596736. Its totient is φ = 1732862880.

The previous prime is 2221440391. The next prime is 2221440413. The reversal of 2221440403 is 3040441222.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-2221440403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2221440413) 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, 165451 + ... + 178372.

It is an arithmetic number, because the mean of its divisors is an integer number (173287296).

Almost surely, 2^2221440403 is an apocalyptic number.

2221440403 is a deficient number, since it is larger than the sum of its proper divisors (551156333).

2221440403 is a wasteful number, since it uses less digits than its factorization.

2221440403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343914.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 2221440403 is about 47132.1589045102. The cubic root of 2221440403 is about 1304.8028265004.

Adding to 2221440403 its reverse (3040441222), we get a palindrome (5261881625).

The spelling of 2221440403 in words is "two billion, two hundred twenty-one million, four hundred forty thousand, four hundred three".