2221145 has 8 divisors (see below), whose sum is σ = 2675904. Its totient is φ = 1769904.

The previous prime is 2221129. The next prime is 2221159. The reversal of 2221145 is 5411222.

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 2221145 - 2⁴ = 2221129 is a prime.

It is a super-2 number, since 2×2221145² = 9866970222050, which contains 22 as substring.

It is a Duffinian 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, 812 + ... + 2258.

It is an arithmetic number, because the mean of its divisors is an integer number (334488).

2^2221145 is an apocalyptic number.

It is an amenable number.

2221145 is a deficient number, since it is larger than the sum of its proper divisors (454759).

2221145 is a wasteful number, since it uses less digits than its factorization.

2221145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759.

The product of its digits is 160, while the sum is 17.

The square root of 2221145 is about 1490.3506298855. The cubic root of 2221145 is about 130.4744987188.

Adding to 2221145 its reverse (5411222), we get a palindrome (7632367).

The spelling of 2221145 in words is "two million, two hundred twenty-one thousand, one hundred forty-five".