2221361 has 8 divisors (see below), whose sum is σ = 2290944. Its totient is φ = 2152800.

The previous prime is 2221343. The next prime is 2221379. The reversal of 2221361 is 1631222.

It is an interprime number because it is at equal distance from previous prime (2221343) and next prime (2221379).

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 2221361 - 2¹⁴ = 2204977 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221301) 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, 6941 + ... + 7253.

It is an arithmetic number, because the mean of its divisors is an integer number (286368).

2^2221361 is an apocalyptic number.

It is an amenable number.

2221361 is a deficient number, since it is larger than the sum of its proper divisors (69583).

2221361 is a wasteful number, since it uses less digits than its factorization.

2221361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511.

The product of its digits is 144, while the sum is 17.

The square root of 2221361 is about 1490.4230942924. The cubic root of 2221361 is about 130.4787280057.

Adding to 2221361 its reverse (1631222), we get a palindrome (3852583).

The spelling of 2221361 in words is "two million, two hundred twenty-one thousand, three hundred sixty-one".