2241111221 has 8 divisors (see below), whose sum is σ = 2252055960. Its totient is φ = 2230193152.

The previous prime is 2241111217. The next prime is 2241111277. The reversal of 2241111221 is 1221111422.

It can be written as a sum of positive squares in 4 ways, for example, as 749992996 + 1491118225 = 27386^2 + 38615^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2241111221 - 2² = 2241111217 is a prime.

It is a super-2 number, since 2×2241111221² = 10045159009784221682, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2241111221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2241711221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173441 + ... + 185913.

It is an arithmetic number, because the mean of its divisors is an integer number (281506995).

Almost surely, 2^2241111221 is an apocalyptic number.

It is an amenable number.

2241111221 is a deficient number, since it is larger than the sum of its proper divisors (10944739).

2241111221 is a wasteful number, since it uses less digits than its factorization.

2241111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13335.

The product of its digits is 64, while the sum is 17.

The square root of 2241111221 is about 47340.3762236846. The cubic root of 2241111221 is about 1308.6428500681.

Adding to 2241111221 its reverse (1221111422), we get a palindrome (3462222643).

The spelling of 2241111221 in words is "two billion, two hundred forty-one million, one hundred eleven thousand, two hundred twenty-one".