222142145 has 16 divisors (see below), whose sum is σ = 282787200. Its totient is φ = 166942464.

The previous prime is 222142121. The next prime is 222142147. The reversal of 222142145 is 541241222.

It is a cyclic number.

It is not a de Polignac number, because 222142145 - 2¹⁰ = 222141121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222142145.

It is not an unprimeable number, because it can be changed into a prime (222142147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48734 + ... + 53096.

It is an arithmetic number, because the mean of its divisors is an integer number (17674200).

Almost surely, 2^222142145 is an apocalyptic number.

It is an amenable number.

222142145 is a deficient number, since it is larger than the sum of its proper divisors (60645055).

222142145 is a wasteful number, since it uses less digits than its factorization.

222142145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4984.

The product of its digits is 1280, while the sum is 23.

The square root of 222142145 is about 14904.4337363081. The cubic root of 222142145 is about 605.6341005518.

Adding to 222142145 its reverse (541241222), we get a palindrome (763383367).

The spelling of 222142145 in words is "two hundred twenty-two million, one hundred forty-two thousand, one hundred forty-five".