222002145 has 12 divisors (see below), whose sum is σ = 384803796. Its totient is φ = 118401120.

The previous prime is 222002113. The next prime is 222002147. The reversal of 222002145 is 541200222.

It can be written as a sum of positive squares in 2 ways, for example, as 51151104 + 170851041 = 7152^2 + 13071^2 .

It is not a de Polignac number, because 222002145 - 2⁵ = 222002113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222002147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2466646 + ... + 2466735.

It is an arithmetic number, because the mean of its divisors is an integer number (32066983).

Almost surely, 2^222002145 is an apocalyptic number.

It is an amenable number.

222002145 is a deficient number, since it is larger than the sum of its proper divisors (162801651).

222002145 is a wasteful number, since it uses less digits than its factorization.

222002145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4933392 (or 4933389 counting only the distinct ones).

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

The square root of 222002145 is about 14899.7364070644. The cubic root of 222002145 is about 605.5068448070.

Adding to 222002145 its reverse (541200222), we get a palindrome (763202367).

The spelling of 222002145 in words is "two hundred twenty-two million, two thousand, one hundred forty-five".