2145304222 has 48 divisors (see below), whose sum is σ = 3583323648. Its totient is φ = 961868160.

The previous prime is 2145304219. The next prime is 2145304223. The reversal of 2145304222 is 2224035412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145304223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1199613 + ... + 1201399.

It is an arithmetic number, because the mean of its divisors is an integer number (74652576).

Almost surely, 2^2145304222 is an apocalyptic number.

2145304222 is a deficient number, since it is larger than the sum of its proper divisors (1438019426).

2145304222 is a wasteful number, since it uses less digits than its factorization.

2145304222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1921 (or 1904 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 2145304222 is about 46317.4289225989. The cubic root of 2145304222 is about 1289.7225575648.

Adding to 2145304222 its reverse (2224035412), we get a palindrome (4369339634).

The spelling of 2145304222 in words is "two billion, one hundred forty-five million, three hundred four thousand, two hundred twenty-two".