2220402145 has 8 divisors (see below), whose sum is σ = 2869442856. Its totient is φ = 1639681536.

The previous prime is 2220402143. The next prime is 2220402161. The reversal of 2220402145 is 5412040222.

It can be written as a sum of positive squares in 4 ways, for example, as 358307041 + 1862095104 = 18929^2 + 43152^2 .

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 2220402145 - 2¹ = 2220402143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2220402143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17079952 + ... + 17080081.

It is an arithmetic number, because the mean of its divisors is an integer number (358680357).

Almost surely, 2^2220402145 is an apocalyptic number.

It is an amenable number.

2220402145 is a deficient number, since it is larger than the sum of its proper divisors (649040711).

2220402145 is a wasteful number, since it uses less digits than its factorization.

2220402145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34160051.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 2220402145 is about 47121.1432904593. The cubic root of 2220402145 is about 1304.5995150089.

Adding to 2220402145 its reverse (5412040222), we get a palindrome (7632442367).

The spelling of 2220402145 in words is "two billion, two hundred twenty million, four hundred two thousand, one hundred forty-five".