2145040222 has 16 divisors (see below), whose sum is σ = 3499376832. Its totient is φ = 980215200.

The previous prime is 2145040211. The next prime is 2145040223. The reversal of 2145040222 is 2220405412.

It is a junction number, because it is equal to n+sod(n) for n = 2145040193 and 2145040202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145040223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405798 + ... + 411049.

It is an arithmetic number, because the mean of its divisors is an integer number (218711052).

Almost surely, 2^2145040222 is an apocalyptic number.

2145040222 is a deficient number, since it is larger than the sum of its proper divisors (1354336610).

2145040222 is a wasteful number, since it uses less digits than its factorization.

2145040222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816963.

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

The square root of 2145040222 is about 46314.5789357952. The cubic root of 2145040222 is about 1289.6696512032.

Adding to 2145040222 its reverse (2220405412), we get a palindrome (4365445634).

The spelling of 2145040222 in words is "two billion, one hundred forty-five million, forty thousand, two hundred twenty-two".