2221032145 has 8 divisors (see below), whose sum is σ = 2781118656. Its totient is φ = 1699572336.

The previous prime is 2221032139. The next prime is 2221032181. The reversal of 2221032145 is 5412301222.

It is a happy number.

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 2221032145 - 2³ = 2221032137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9656547 + ... + 9656776.

It is an arithmetic number, because the mean of its divisors is an integer number (347639832).

Almost surely, 2^2221032145 is an apocalyptic number.

It is an amenable number.

2221032145 is a deficient number, since it is larger than the sum of its proper divisors (560086511).

2221032145 is a wasteful number, since it uses less digits than its factorization.

2221032145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19313351.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2221032145 is about 47127.8277135707. The cubic root of 2221032145 is about 1304.7228890526.

Adding to 2221032145 its reverse (5412301222), we get a palindrome (7633333367).

The spelling of 2221032145 in words is "two billion, two hundred twenty-one million, thirty-two thousand, one hundred forty-five".