2221244401 has 4 divisors (see below), whose sum is σ = 2241622900. Its totient is φ = 2200865904.

The previous prime is 2221244383. The next prime is 2221244437. The reversal of 2221244401 is 1044421222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 641102400 + 1580142001 = 25320^2 + 39751^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221244401 - 2⁵ = 2221244369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221244461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10189086 + ... + 10189303.

It is an arithmetic number, because the mean of its divisors is an integer number (560405725).

Almost surely, 2^2221244401 is an apocalyptic number.

It is an amenable number.

2221244401 is a deficient number, since it is larger than the sum of its proper divisors (20378499).

2221244401 is a wasteful number, since it uses less digits than its factorization.

2221244401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20378498.

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 2221244401 is about 47130.0795776965. The cubic root of 2221244401 is about 1304.7644502761.

Adding to 2221244401 its reverse (1044421222), we get a palindrome (3265665623).

The spelling of 2221244401 in words is "two billion, two hundred twenty-one million, two hundred forty-four thousand, four hundred one".