2221415444 has 24 divisors (see below), whose sum is σ = 3927426048. Its totient is φ = 1099313280.

The previous prime is 2221415437. The next prime is 2221415459. The reversal of 2221415444 is 4445141222.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 710204 + ... + 713324.

It is an arithmetic number, because the mean of its divisors is an integer number (163642752).

Almost surely, 2^2221415444 is an apocalyptic number.

It is an amenable number.

2221415444 is a deficient number, since it is larger than the sum of its proper divisors (1706010604).

2221415444 is a wasteful number, since it uses less digits than its factorization.

2221415444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4895 (or 4893 counting only the distinct ones).

The product of its digits is 10240, while the sum is 29.

The square root of 2221415444 is about 47131.8941270134. The cubic root of 2221415444 is about 1304.7979397768.

Adding to 2221415444 its reverse (4445141222), we get a palindrome (6666556666).

The spelling of 2221415444 in words is "two billion, two hundred twenty-one million, four hundred fifteen thousand, four hundred forty-four".