2222145 has 48 divisors (see below), whose sum is σ = 4268160. Its totient is φ = 1064448.

The previous prime is 2222141. The next prime is 2222147. The reversal of 2222145 is 5412222.

It is not a de Polignac number, because 2222145 - 2² = 2222141 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222141) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19609 + ... + 19721.

It is an arithmetic number, because the mean of its divisors is an integer number (88920).

2^2222145 is an apocalyptic number.

It is an amenable number.

2222145 is a deficient number, since it is larger than the sum of its proper divisors (2046015).

2222145 is a wasteful number, since it uses less digits than its factorization.

2222145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166 (or 163 counting only the distinct ones).

The product of its digits is 320, while the sum is 18.

The square root of 2222145 is about 1490.6860836541. The cubic root of 2222145 is about 130.4940764476.

Adding to 2222145 its reverse (5412222), we get a palindrome (7634367).

The spelling of 2222145 in words is "two million, two hundred twenty-two thousand, one hundred forty-five".